Finding the Fourth Proportional to 63,315.32, 87,317.34 and 54,359.96

Step by Step Solution

1. Step 1: Write the proportion equation
   63,315.32 : 87,317.34 = 54,359.96 : x
2. Step 2: Convert to fraction form
   63,315.32/87,317.34 = 54,359.96/x
3. Step 3: Cross multiply
   63,315.32x = 87,317.34 × 54,359.96
4. Step 4: Simplify right side
   63,315.32x = 4,746,567,109.71
5. Step 5: Solve for x
   x = 4,746,567,109.71/63,315.32
6. Step 6: Final answer
   x = 74,967.12