Finding the Fourth Proportional to 76,494.27, 105,565.01 and 42,505.28

Step by Step Solution

1. Step 1: Write the proportion equation
   76,494.27 : 105,565.01 = 42,505.28 : x
2. Step 2: Convert to fraction form
   76,494.27/105,565.01 = 42,505.28/x
3. Step 3: Cross multiply
   76,494.27x = 105,565.01 × 42,505.28
4. Step 4: Simplify right side
   76,494.27x = 4,487,069,567.90
5. Step 5: Solve for x
   x = 4,487,069,567.90/76,494.27
6. Step 6: Final answer
   x = 58,658.90