Finding the Fourth Proportional to 139,115.63, 208,700.50 and 59,152.68

Step by Step Solution

1. Step 1: Write the proportion equation
   139,115.63 : 208,700.50 = 59,152.68 : x
2. Step 2: Convert to fraction form
   139,115.63/208,700.50 = 59,152.68/x
3. Step 3: Cross multiply
   139,115.63x = 208,700.50 × 59,152.68
4. Step 4: Simplify right side
   139,115.63x = 12,345,193,892.34
5. Step 5: Solve for x
   x = 12,345,193,892.34/139,115.63
6. Step 6: Final answer
   x = 88,740.52