Finding the Fourth Proportional to 51,255.62, 70,669.92 and 42,149.16

Step by Step Solution

1. Step 1: Write the proportion equation
   51,255.62 : 70,669.92 = 42,149.16 : x
2. Step 2: Convert to fraction form
   51,255.62/70,669.92 = 42,149.16/x
3. Step 3: Cross multiply
   51,255.62x = 70,669.92 × 42,149.16
4. Step 4: Simplify right side
   51,255.62x = 2,978,677,811.76
5. Step 5: Solve for x
   x = 2,978,677,811.76/51,255.62
6. Step 6: Final answer
   x = 58,114.17