Finding the Fourth Proportional to 90,440.40, 124,810.72 and 50,157.98

Step by Step Solution

1. Step 1: Write the proportion equation
   90,440.40 : 124,810.72 = 50,157.98 : x
2. Step 2: Convert to fraction form
   90,440.40/124,810.72 = 50,157.98/x
3. Step 3: Cross multiply
   90,440.40x = 124,810.72 × 50,157.98
4. Step 4: Simplify right side
   90,440.40x = 6,260,254,300.34
5. Step 5: Solve for x
   x = 6,260,254,300.34/90,440.40
6. Step 6: Final answer
   x = 69,219.67