Finding the Fourth Proportional to 51,256.62, 70,671.30 and 42,150.16

Step by Step Solution

1. Step 1: Write the proportion equation
   51,256.62 : 70,671.30 = 42,150.16 : x
2. Step 2: Convert to fraction form
   51,256.62/70,671.30 = 42,150.16/x
3. Step 3: Cross multiply
   51,256.62x = 70,671.30 × 42,150.16
4. Step 4: Simplify right side
   51,256.62x = 2,978,806,602.41
5. Step 5: Solve for x
   x = 2,978,806,602.41/51,256.62
6. Step 6: Final answer
   x = 58,115.55