Finding the Fourth Proportional to 71,816,689.72, 99,107,142.70 and 40,876,858.68

Step by Step Solution

1. Step 1: Write the proportion equation
   71,816,689.72 : 99,107,142.70 = 40,876,858.68 : x
2. Step 2: Convert to fraction form
   71,816,689.72/99,107,142.70 = 40,876,858.68/x
3. Step 3: Cross multiply
   71,816,689.72x = 99,107,142.70 × 40,876,858.68
4. Step 4: Simplify right side
   71,816,689.72x = 4,051,188,666,326,493.50
5. Step 5: Solve for x
   x = 4,051,188,666,326,493.50/71,816,689.72
6. Step 6: Final answer
   x = 56,410,128.09