Finding the Fourth Proportional to 77,116.79, 106,419.17 and 42,662.79

Step by Step Solution

1. Step 1: Write the proportion equation
   77,116.79 : 106,419.17 = 42,662.79 : x
2. Step 2: Convert to fraction form
   77,116.79/106,419.17 = 42,662.79/x
3. Step 3: Cross multiply
   77,116.79x = 106,419.17 × 42,662.79
4. Step 4: Simplify right side
   77,116.79x = 4,540,139,047.43
5. Step 5: Solve for x
   x = 4,540,139,047.43/77,116.79
6. Step 6: Final answer
   x = 58,873.55