Finding the Fourth Proportional to 55,061.12, 75,981.80 and 30,864.16

Step by Step Solution

1. Step 1: Write the proportion equation
   55,061.12 : 75,981.80 = 30,864.16 : x
2. Step 2: Convert to fraction form
   55,061.12/75,981.80 = 30,864.16/x
3. Step 3: Cross multiply
   55,061.12x = 75,981.80 × 30,864.16
4. Step 4: Simplify right side
   55,061.12x = 2,345,114,432.29
5. Step 5: Solve for x
   x = 2,345,114,432.29/55,061.12
6. Step 6: Final answer
   x = 42,591.11