Finding the Fourth Proportional to 88,813.76, 133,155.12 and 42,012

Step by Step Solution

1. Step 1: Write the proportion equation
   88,813.76 : 133,155.12 = 42,012 : x
2. Step 2: Convert to fraction form
   88,813.76/133,155.12 = 42,012/x
3. Step 3: Cross multiply
   88,813.76x = 133,155.12 × 42,012
4. Step 4: Simplify right side
   88,813.76x = 5,594,112,901.44
5. Step 5: Solve for x
   x = 5,594,112,901.44/88,813.76
6. Step 6: Final answer
   x = 62,987.01