Finding the Fourth Proportional to 137,401.39, 206,131.47 and 42,629.51

Step by Step Solution

1. Step 1: Write the proportion equation
   137,401.39 : 206,131.47 = 42,629.51 : x
2. Step 2: Convert to fraction form
   137,401.39/206,131.47 = 42,629.51/x
3. Step 3: Cross multiply
   137,401.39x = 206,131.47 × 42,629.51
4. Step 4: Simplify right side
   137,401.39x = 8,787,283,561.68
5. Step 5: Solve for x
   x = 8,787,283,561.68/137,401.39
6. Step 6: Final answer
   x = 63,953.38