Finding the Fourth Proportional to 139,553.82, 209,330.82 and 60,624.99

Step by Step Solution

1. Step 1: Write the proportion equation
   139,553.82 : 209,330.82 = 60,624.99 : x
2. Step 2: Convert to fraction form
   139,553.82/209,330.82 = 60,624.99/x
3. Step 3: Cross multiply
   139,553.82x = 209,330.82 × 60,624.99
4. Step 4: Simplify right side
   139,553.82x = 12,690,678,869.19
5. Step 5: Solve for x
   x = 12,690,678,869.19/139,553.82
6. Step 6: Final answer
   x = 90,937.52