Finding the Fourth Proportional to 113,573,518, 156,731,455.56 and 64,685,494.96

Step by Step Solution

1. Step 1: Write the proportion equation
   113,573,518 : 156,731,455.56 = 64,685,494.96 : x
2. Step 2: Convert to fraction form
   113,573,518/156,731,455.56 = 64,685,494.96/x
3. Step 3: Cross multiply
   113,573,518x = 156,731,455.56 × 64,685,494.96
4. Step 4: Simplify right side
   113,573,518x = 10,138,251,778,699,844
5. Step 5: Solve for x
   x = 10,138,251,778,699,844/113,573,518
6. Step 6: Final answer
   x = 89,265,983.45