Finding the Fourth Proportional to 92,978.86, 128,311.01 and 50,537.29

Step by Step Solution

1. Step 1: Write the proportion equation
   92,978.86 : 128,311.01 = 50,537.29 : x
2. Step 2: Convert to fraction form
   92,978.86/128,311.01 = 50,537.29/x
3. Step 3: Cross multiply
   92,978.86x = 128,311.01 × 50,537.29
4. Step 4: Simplify right side
   92,978.86x = 6,484,490,722.56
5. Step 5: Solve for x
   x = 6,484,490,722.56/92,978.86
6. Step 6: Final answer
   x = 69,741.56