Finding the Fourth Proportional to 112,496.96, 155,280.44 and 64,782.16

Step by Step Solution

1. Step 1: Write the proportion equation
   112,496.96 : 155,280.44 = 64,782.16 : x
2. Step 2: Convert to fraction form
   112,496.96/155,280.44 = 64,782.16/x
3. Step 3: Cross multiply
   112,496.96x = 155,280.44 × 64,782.16
4. Step 4: Simplify right side
   112,496.96x = 10,059,402,308.95
5. Step 5: Solve for x
   x = 10,059,402,308.95/112,496.96
6. Step 6: Final answer
   x = 89,419.33