Finding the Fourth Proportional to 112,487.60, 155,233.04 and 64,740.94

Step by Step Solution

1. Step 1: Write the proportion equation
   112,487.60 : 155,233.04 = 64,740.94 : x
2. Step 2: Convert to fraction form
   112,487.60/155,233.04 = 64,740.94/x
3. Step 3: Cross multiply
   112,487.60x = 155,233.04 × 64,740.94
4. Step 4: Simplify right side
   112,487.60x = 10,049,932,928.66
5. Step 5: Solve for x
   x = 10,049,932,928.66/112,487.60
6. Step 6: Final answer
   x = 89,342.58