Finding the Fourth Proportional to 139,026.43, 208,568.81 and 60,151.87

Step by Step Solution

1. Step 1: Write the proportion equation
   139,026.43 : 208,568.81 = 60,151.87 : x
2. Step 2: Convert to fraction form
   139,026.43/208,568.81 = 60,151.87/x
3. Step 3: Cross multiply
   139,026.43x = 208,568.81 × 60,151.87
4. Step 4: Simplify right side
   139,026.43x = 12,545,803,644.42
5. Step 5: Solve for x
   x = 12,545,803,644.42/139,026.43
6. Step 6: Final answer
   x = 90,240.42