Finding the Fourth Proportional to 112,702.32, 155,524.08 and 64,962.72

Step by Step Solution

1. Step 1: Write the proportion equation
   112,702.32 : 155,524.08 = 64,962.72 : x
2. Step 2: Convert to fraction form
   112,702.32/155,524.08 = 64,962.72/x
3. Step 3: Cross multiply
   112,702.32x = 155,524.08 × 64,962.72
4. Step 4: Simplify right side
   112,702.32x = 10,103,267,262.30
5. Step 5: Solve for x
   x = 10,103,267,262.30/112,702.32
6. Step 6: Final answer
   x = 89,645.60