Finding the Fourth Proportional to 139,129.61, 208,653.38 and 59,167.43

Step by Step Solution

1. Step 1: Write the proportion equation
   139,129.61 : 208,653.38 = 59,167.43 : x
2. Step 2: Convert to fraction form
   139,129.61/208,653.38 = 59,167.43/x
3. Step 3: Cross multiply
   139,129.61x = 208,653.38 × 59,167.43
4. Step 4: Simplify right side
   139,129.61x = 12,345,482,916.31
5. Step 5: Solve for x
   x = 12,345,482,916.31/139,129.61
6. Step 6: Final answer
   x = 88,733.68