Finding the Fourth Proportional to 139,170.16, 208,664.52 and 59,166.64

Step by Step Solution

1. Step 1: Write the proportion equation
   139,170.16 : 208,664.52 = 59,166.64 : x
2. Step 2: Convert to fraction form
   139,170.16/208,664.52 = 59,166.64/x
3. Step 3: Cross multiply
   139,170.16x = 208,664.52 × 59,166.64
4. Step 4: Simplify right side
   139,170.16x = 12,345,978,535.61
5. Step 5: Solve for x
   x = 12,345,978,535.61/139,170.16
6. Step 6: Final answer
   x = 88,711.39