To estimate the Funds From Operations (FFO) to Net Debt ratio according to S&P Global Ratings methodology for 2022, we first define the components:

1.  **FFO (Funds From Operations):**
    *   S&P calculates FFO as "Cash Flows From Used In Operations Before Changes In Working Capital" + "Dividends Received Classified As Investing Activities" - "Interest On Operating Assets" - "Interest On Lease" (often adjusted).
    *   Using the provided data for the 2022-01-01 to 2023-01-01 period:
        *   Cash Flows From Used In Operations Before Changes In Working Capital: 4,804,300,000
        *   Dividends Received: 128,600,000
        *   Interest On Operating Assets: 78,500,000
        *   Interest On Lease: 52,500,000
    *   FFO = 4,804,300,000 + 128,600,000 - 78,500,000 - 52,500,000 = 4,801,900,000.

2.  **Net Debt:**
    *   Net Debt is typically Total Financial Debt minus Cash and Cash Equivalents and Liquid Assets.
    *   Financial Debt (Current + Noncurrent, excluding leases and concession liabilities if excluded by specific S&P adjustments, but using total financial liabilities as standard):
        *   Noncurrent Financial Liabilities (excl. Concession/Lease): 19,692,100,000
        *   Current Financial Liabilities (excl. Concession/Lease): 6,521,400,000
        *   Total Financial Liabilities: 26,213,500,000
    *   Less: Cash and Cash Equivalents: 9,012,200,000
    *   Net Debt = 26,213,500,000 - 9,012,200,000 = 17,201,300,000.

3.  **FFO / Net Debt Ratio:**
    *   Ratio = 4,801,900,000 / 17,201,300,000 ≈ 0.27915.

Expressed as a percentage: 27.92%.

<answer>0.2792</answer>