Finding the Fourth Proportional to 112,355.10, 155,056.68 and 64,613.70

Step by Step Solution

1. Step 1: Write the proportion equation
   112,355.10 : 155,056.68 = 64,613.70 : x
2. Step 2: Convert to fraction form
   112,355.10/155,056.68 = 64,613.70/x
3. Step 3: Cross multiply
   112,355.10x = 155,056.68 × 64,613.70
4. Step 4: Simplify right side
   112,355.10x = 10,018,785,804.52
5. Step 5: Solve for x
   x = 10,018,785,804.52/112,355.10
6. Step 6: Final answer
   x = 89,170.73