Finding the Fourth Proportional to 92,834.25, 128,111.15 and 50,392.78

Step by Step Solution

1. Step 1: Write the proportion equation
   92,834.25 : 128,111.15 = 50,392.78 : x
2. Step 2: Convert to fraction form
   92,834.25/128,111.15 = 50,392.78/x
3. Step 3: Cross multiply
   92,834.25x = 128,111.15 × 50,392.78
4. Step 4: Simplify right side
   92,834.25x = 6,455,876,997.50
5. Step 5: Solve for x
   x = 6,455,876,997.50/92,834.25
6. Step 6: Final answer
   x = 69,541.97