Finding the Fourth Proportional to 99,643,650.30, 149,465,475.45 and 83,771,279.10

Step by Step Solution

1. Step 1: Write the proportion equation
   99,643,650.30 : 149,465,475.45 = 83,771,279.10 : x
2. Step 2: Convert to fraction form
   99,643,650.30/149,465,475.45 = 83,771,279.10/x
3. Step 3: Cross multiply
   99,643,650.30x = 149,465,475.45 × 83,771,279.10
4. Step 4: Simplify right side
   99,643,650.30x = 12,520,914,059,736,146
5. Step 5: Solve for x
   x = 12,520,914,059,736,146/99,643,650.30
6. Step 6: Final answer
   x = 125,656,918.65