Finding the Fourth Proportional to 139,114.25, 208,698.43 and 59,151.30

Step by Step Solution

1. Step 1: Write the proportion equation
   139,114.25 : 208,698.43 = 59,151.30 : x
2. Step 2: Convert to fraction form
   139,114.25/208,698.43 = 59,151.30/x
3. Step 3: Cross multiply
   139,114.25x = 208,698.43 × 59,151.30
4. Step 4: Simplify right side
   139,114.25x = 12,344,782,994.65
5. Step 5: Solve for x
   x = 12,344,782,994.65/139,114.25
6. Step 6: Final answer
   x = 88,738.45