Finding the Fourth Proportional to 77,468.17, 116,188.89 and 20,542.48

Step by Step Solution

1. Step 1: Write the proportion equation
   77,468.17 : 116,188.89 = 20,542.48 : x
2. Step 2: Convert to fraction form
   77,468.17/116,188.89 = 20,542.48/x
3. Step 3: Cross multiply
   77,468.17x = 116,188.89 × 20,542.48
4. Step 4: Simplify right side
   77,468.17x = 2,386,807,265.39
5. Step 5: Solve for x
   x = 2,386,807,265.39/77,468.17
6. Step 6: Final answer
   x = 30,810.17