Finding the Fourth Proportional to 110,235.60, 152,120.72 and 64,915.49

Step by Step Solution

1. Step 1: Write the proportion equation
   110,235.60 : 152,120.72 = 64,915.49 : x
2. Step 2: Convert to fraction form
   110,235.60/152,120.72 = 64,915.49/x
3. Step 3: Cross multiply
   110,235.60x = 152,120.72 × 64,915.49
4. Step 4: Simplify right side
   110,235.60x = 9,874,989,992.77
5. Step 5: Solve for x
   x = 9,874,989,992.77/110,235.60
6. Step 6: Final answer
   x = 89,580.77