Finding the Fourth Proportional to 32,158.16, 44,387.16 and 20,978

Step by Step Solution

1. Step 1: Write the proportion equation
   32,158.16 : 44,387.16 = 20,978 : x
2. Step 2: Convert to fraction form
   32,158.16/44,387.16 = 20,978/x
3. Step 3: Cross multiply
   32,158.16x = 44,387.16 × 20,978
4. Step 4: Simplify right side
   32,158.16x = 931,153,842.48
5. Step 5: Solve for x
   x = 931,153,842.48/32,158.16
6. Step 6: Final answer
   x = 28,955.45