Finding the Fourth Proportional to 112,471.16, 155,214.92 and 64,724.72

Step by Step Solution

1. Step 1: Write the proportion equation
   112,471.16 : 155,214.92 = 64,724.72 : x
2. Step 2: Convert to fraction form
   112,471.16/155,214.92 = 64,724.72/x
3. Step 3: Cross multiply
   112,471.16x = 155,214.92 × 64,724.72
4. Step 4: Simplify right side
   112,471.16x = 10,046,242,236.82
5. Step 5: Solve for x
   x = 10,046,242,236.82/112,471.16
6. Step 6: Final answer
   x = 89,322.83