Finding the Fourth Proportional to 139,076.71, 208,625.42 and 59,105.71

Step by Step Solution

1. Step 1: Write the proportion equation
   139,076.71 : 208,625.42 = 59,105.71 : x
2. Step 2: Convert to fraction form
   139,076.71/208,625.42 = 59,105.71/x
3. Step 3: Cross multiply
   139,076.71x = 208,625.42 × 59,105.71
4. Step 4: Simplify right side
   139,076.71x = 12,330,953,981.69
5. Step 5: Solve for x
   x = 12,330,953,981.69/139,076.71
6. Step 6: Final answer
   x = 88,662.97