Finding the Fourth Proportional to 81,931.88, 113,041.50 and 50,068.10

Step by Step Solution

1. Step 1: Write the proportion equation
   81,931.88 : 113,041.50 = 50,068.10 : x
2. Step 2: Convert to fraction form
   81,931.88/113,041.50 = 50,068.10/x
3. Step 3: Cross multiply
   81,931.88x = 113,041.50 × 50,068.10
4. Step 4: Simplify right side
   81,931.88x = 5,659,773,126.15
5. Step 5: Solve for x
   x = 5,659,773,126.15/81,931.88
6. Step 6: Final answer
   x = 69,079.01