Finding the Fourth Proportional to 92,978.07, 128,310.17 and 50,536.56

Step by Step Solution

1. Step 1: Write the proportion equation
   92,978.07 : 128,310.17 = 50,536.56 : x
2. Step 2: Convert to fraction form
   92,978.07/128,310.17 = 50,536.56/x
3. Step 3: Cross multiply
   92,978.07x = 128,310.17 × 50,536.56
4. Step 4: Simplify right side
   92,978.07x = 6,484,354,604.82
5. Step 5: Solve for x
   x = 6,484,354,604.82/92,978.07
6. Step 6: Final answer
   x = 69,740.69