Finding the Fourth Proportional to 51,256.08, 70,670.56 and 42,149.62

Step by Step Solution

1. Step 1: Write the proportion equation
   51,256.08 : 70,670.56 = 42,149.62 : x
2. Step 2: Convert to fraction form
   51,256.08/70,670.56 = 42,149.62/x
3. Step 3: Cross multiply
   51,256.08x = 70,670.56 × 42,149.62
4. Step 4: Simplify right side
   51,256.08x = 2,978,737,197.29
5. Step 5: Solve for x
   x = 2,978,737,197.29/51,256.08
6. Step 6: Final answer
   x = 58,114.80