Finding the Fourth Proportional to 85,536,044.10, 128,304,066.15 and 83,016,620.10

Step by Step Solution

1. Step 1: Write the proportion equation
   85,536,044.10 : 128,304,066.15 = 83,016,620.10 : x
2. Step 2: Convert to fraction form
   85,536,044.10/128,304,066.15 = 83,016,620.10/x
3. Step 3: Cross multiply
   85,536,044.10x = 128,304,066.15 × 83,016,620.10
4. Step 4: Simplify right side
   85,536,044.10x = 10,651,369,916,859,820
5. Step 5: Solve for x
   x = 10,651,369,916,859,820/85,536,044.10
6. Step 6: Final answer
   x = 124,524,930.15