Finding the Fourth Proportional to 137,401.47, 206,131.62 and 42,629.61

Step by Step Solution

1. Step 1: Write the proportion equation
   137,401.47 : 206,131.62 = 42,629.61 : x
2. Step 2: Convert to fraction form
   137,401.47/206,131.62 = 42,629.61/x
3. Step 3: Cross multiply
   137,401.47x = 206,131.62 × 42,629.61
4. Step 4: Simplify right side
   137,401.47x = 8,787,310,569.27
5. Step 5: Solve for x
   x = 8,787,310,569.27/137,401.47
6. Step 6: Final answer
   x = 63,953.54