Finding the Fourth Proportional to 139,024.85, 208,392.78 and 59,114.09

Step by Step Solution

1. Step 1: Write the proportion equation
   139,024.85 : 208,392.78 = 59,114.09 : x
2. Step 2: Convert to fraction form
   139,024.85/208,392.78 = 59,114.09/x
3. Step 3: Cross multiply
   139,024.85x = 208,392.78 × 59,114.09
4. Step 4: Simplify right side
   139,024.85x = 12,318,948,510.31
5. Step 5: Solve for x
   x = 12,318,948,510.31/139,024.85
6. Step 6: Final answer
   x = 88,609.69