Finding the Fourth Proportional to 88,992.32, 133,262.56 and 53,431.52

Step by Step Solution

1. Step 1: Write the proportion equation
   88,992.32 : 133,262.56 = 53,431.52 : x
2. Step 2: Convert to fraction form
   88,992.32/133,262.56 = 53,431.52/x
3. Step 3: Cross multiply
   88,992.32x = 133,262.56 × 53,431.52
4. Step 4: Simplify right side
   88,992.32x = 7,120,421,139.89
5. Step 5: Solve for x
   x = 7,120,421,139.89/88,992.32
6. Step 6: Final answer
   x = 80,011.64