Finding the Fourth Proportional to 112,439.16, 155,177.10 and 64,694.52

Step by Step Solution

1. Step 1: Write the proportion equation
   112,439.16 : 155,177.10 = 64,694.52 : x
2. Step 2: Convert to fraction form
   112,439.16/155,177.10 = 64,694.52/x
3. Step 3: Cross multiply
   112,439.16x = 155,177.10 × 64,694.52
4. Step 4: Simplify right side
   112,439.16x = 10,039,107,999.49
5. Step 5: Solve for x
   x = 10,039,107,999.49/112,439.16
6. Step 6: Final answer
   x = 89,284.80