Finding the Fourth Proportional to 76,133.52, 105,068.88 and 42,142.32

Step by Step Solution

1. Step 1: Write the proportion equation
   76,133.52 : 105,068.88 = 42,142.32 : x
2. Step 2: Convert to fraction form
   76,133.52/105,068.88 = 42,142.32/x
3. Step 3: Cross multiply
   76,133.52x = 105,068.88 × 42,142.32
4. Step 4: Simplify right side
   76,133.52x = 4,427,846,363.00
5. Step 5: Solve for x
   x = 4,427,846,363.00/76,133.52
6. Step 6: Final answer
   x = 58,158.96