Finding the Fourth Proportional to 90,472.10, 124,769.70 and 56,483.69

Step by Step Solution

1. Step 1: Write the proportion equation
   90,472.10 : 124,769.70 = 56,483.69 : x
2. Step 2: Convert to fraction form
   90,472.10/124,769.70 = 56,483.69/x
3. Step 3: Cross multiply
   90,472.10x = 124,769.70 × 56,483.69
4. Step 4: Simplify right side
   90,472.10x = 7,047,452,432.34
5. Step 5: Solve for x
   x = 7,047,452,432.34/90,472.10
6. Step 6: Final answer
   x = 77,896.42