Finding the Fourth Proportional to 90,427.59, 124,793.16 and 50,139

Step by Step Solution

1. Step 1: Write the proportion equation
   90,427.59 : 124,793.16 = 50,139 : x
2. Step 2: Convert to fraction form
   90,427.59/124,793.16 = 50,139/x
3. Step 3: Cross multiply
   90,427.59x = 124,793.16 × 50,139
4. Step 4: Simplify right side
   90,427.59x = 6,257,004,249.24
5. Step 5: Solve for x
   x = 6,257,004,249.24/90,427.59
6. Step 6: Final answer
   x = 69,193.53