Finding the Fourth Proportional to 77,579.56, 116,420.37 and 42,543.82

Step by Step Solution

1. Step 1: Write the proportion equation
   77,579.56 : 116,420.37 = 42,543.82 : x
2. Step 2: Convert to fraction form
   77,579.56/116,420.37 = 42,543.82/x
3. Step 3: Cross multiply
   77,579.56x = 116,420.37 × 42,543.82
4. Step 4: Simplify right side
   77,579.56x = 4,952,967,265.61
5. Step 5: Solve for x
   x = 4,952,967,265.61/77,579.56
6. Step 6: Final answer
   x = 63,843.71