Finding the Fourth Proportional to 90,460.32, 124,783.92 and 56,868

Step by Step Solution

1. Step 1: Write the proportion equation
   90,460.32 : 124,783.92 = 56,868 : x
2. Step 2: Convert to fraction form
   90,460.32/124,783.92 = 56,868/x
3. Step 3: Cross multiply
   90,460.32x = 124,783.92 × 56,868
4. Step 4: Simplify right side
   90,460.32x = 7,096,211,962.56
5. Step 5: Solve for x
   x = 7,096,211,962.56/90,460.32
6. Step 6: Final answer
   x = 78,445.58