Finding the Fourth Proportional to 73,977.30, 102,046.23 and 42,140.25

Step by Step Solution

1. Step 1: Write the proportion equation
   73,977.30 : 102,046.23 = 42,140.25 : x
2. Step 2: Convert to fraction form
   73,977.30/102,046.23 = 42,140.25/x
3. Step 3: Cross multiply
   73,977.30x = 102,046.23 × 42,140.25
4. Step 4: Simplify right side
   73,977.30x = 4,300,253,643.76
5. Step 5: Solve for x
   x = 4,300,253,643.76/73,977.30
6. Step 6: Final answer
   x = 58,129.37