Finding the Fourth Proportional to 65,257.47, 90,098.74 and 50,123.13

Step by Step Solution

1. Step 1: Write the proportion equation
   65,257.47 : 90,098.74 = 50,123.13 : x
2. Step 2: Convert to fraction form
   65,257.47/90,098.74 = 50,123.13/x
3. Step 3: Cross multiply
   65,257.47x = 90,098.74 × 50,123.13
4. Step 4: Simplify right side
   65,257.47x = 4,516,030,857.86
5. Step 5: Solve for x
   x = 4,516,030,857.86/65,257.47
6. Step 6: Final answer
   x = 69,203.28