Finding the Fourth Proportional to 99,606,892.05, 137,457,694.46 and 55,556,730.18

Step by Step Solution

1. Step 1: Write the proportion equation
   99,606,892.05 : 137,457,694.46 = 55,556,730.18 : x
2. Step 2: Convert to fraction form
   99,606,892.05/137,457,694.46 = 55,556,730.18/x
3. Step 3: Cross multiply
   99,606,892.05x = 137,457,694.46 × 55,556,730.18
4. Step 4: Simplify right side
   99,606,892.05x = 7,636,700,042,001,318
5. Step 5: Solve for x
   x = 7,636,700,042,001,318/99,606,892.05
6. Step 6: Final answer
   x = 76,668,389.96