Finding the Fourth Proportional to 88,013.29, 131,967.20 and 28,015.86

Step by Step Solution

1. Step 1: Write the proportion equation
   88,013.29 : 131,967.20 = 28,015.86 : x
2. Step 2: Convert to fraction form
   88,013.29/131,967.20 = 28,015.86/x
3. Step 3: Cross multiply
   88,013.29x = 131,967.20 × 28,015.86
4. Step 4: Simplify right side
   88,013.29x = 3,697,173,799.88
5. Step 5: Solve for x
   x = 3,697,173,799.88/88,013.29
6. Step 6: Final answer
   x = 42,006.99