Finding the Fourth Proportional to 99,849.96, 137,792.10 and 55,137

Step by Step Solution

1. Step 1: Write the proportion equation
   99,849.96 : 137,792.10 = 55,137 : x
2. Step 2: Convert to fraction form
   99,849.96/137,792.10 = 55,137/x
3. Step 3: Cross multiply
   99,849.96x = 137,792.10 × 55,137
4. Step 4: Simplify right side
   99,849.96x = 7,597,443,017.70
5. Step 5: Solve for x
   x = 7,597,443,017.70/99,849.96
6. Step 6: Final answer
   x = 76,088.59