Finding the Fourth Proportional to 52,877.40, 72,921.38 and 42,157.86

Step by Step Solution

1. Step 1: Write the proportion equation
   52,877.40 : 72,921.38 = 42,157.86 : x
2. Step 2: Convert to fraction form
   52,877.40/72,921.38 = 42,157.86/x
3. Step 3: Cross multiply
   52,877.40x = 72,921.38 × 42,157.86
4. Step 4: Simplify right side
   52,877.40x = 3,074,209,118.26
5. Step 5: Solve for x
   x = 3,074,209,118.26/52,877.40
6. Step 6: Final answer
   x = 58,138.43