Finding the Fourth Proportional to 73,962.32, 102,067.88 and 42,131.20

Step by Step Solution

1. Step 1: Write the proportion equation
   73,962.32 : 102,067.88 = 42,131.20 : x
2. Step 2: Convert to fraction form
   73,962.32/102,067.88 = 42,131.20/x
3. Step 3: Cross multiply
   73,962.32x = 102,067.88 × 42,131.20
4. Step 4: Simplify right side
   73,962.32x = 4,300,242,265.86
5. Step 5: Solve for x
   x = 4,300,242,265.86/73,962.32
6. Step 6: Final answer
   x = 58,140.99