Finding the Fourth Proportional to 56,812.32, 78,403.68 and 31,662

Step by Step Solution

1. Step 1: Write the proportion equation
   56,812.32 : 78,403.68 = 31,662 : x
2. Step 2: Convert to fraction form
   56,812.32/78,403.68 = 31,662/x
3. Step 3: Cross multiply
   56,812.32x = 78,403.68 × 31,662
4. Step 4: Simplify right side
   56,812.32x = 2,482,417,316.16
5. Step 5: Solve for x
   x = 2,482,417,316.16/56,812.32
6. Step 6: Final answer
   x = 43,695.05