Finding the Fourth Proportional to 76,130.37, 105,057.63 and 42,140.25

Step by Step Solution

1. Step 1: Write the proportion equation
   76,130.37 : 105,057.63 = 42,140.25 : x
2. Step 2: Convert to fraction form
   76,130.37/105,057.63 = 42,140.25/x
3. Step 3: Cross multiply
   76,130.37x = 105,057.63 × 42,140.25
4. Step 4: Simplify right side
   76,130.37x = 4,427,154,792.61
5. Step 5: Solve for x
   x = 4,427,154,792.61/76,130.37
6. Step 6: Final answer
   x = 58,152.28