Finding the Fourth Proportional to 76,148.37, 105,082.47 and 42,158.25

Step by Step Solution

1. Step 1: Write the proportion equation
   76,148.37 : 105,082.47 = 42,158.25 : x
2. Step 2: Convert to fraction form
   76,148.37/105,082.47 = 42,158.25/x
3. Step 3: Cross multiply
   76,148.37x = 105,082.47 × 42,158.25
4. Step 4: Simplify right side
   76,148.37x = 4,430,093,040.88
5. Step 5: Solve for x
   x = 4,430,093,040.88/76,148.37
6. Step 6: Final answer
   x = 58,177.12