Finding the Fourth Proportional to 88,801.80, 133,137.12 and 42,000

Step by Step Solution

1. Step 1: Write the proportion equation
   88,801.80 : 133,137.12 = 42,000 : x
2. Step 2: Convert to fraction form
   88,801.80/133,137.12 = 42,000/x
3. Step 3: Cross multiply
   88,801.80x = 133,137.12 × 42,000
4. Step 4: Simplify right side
   88,801.80x = 5,591,759,040
5. Step 5: Solve for x
   x = 5,591,759,040/88,801.80
6. Step 6: Final answer
   x = 62,968.98