Finding the Fourth Proportional to 72,465.64, 108,680.22 and 28,077.16

Step by Step Solution

1. Step 1: Write the proportion equation
   72,465.64 : 108,680.22 = 28,077.16 : x
2. Step 2: Convert to fraction form
   72,465.64/108,680.22 = 28,077.16/x
3. Step 3: Cross multiply
   72,465.64x = 108,680.22 × 28,077.16
4. Step 4: Simplify right side
   72,465.64x = 3,051,431,925.78
5. Step 5: Solve for x
   x = 3,051,431,925.78/72,465.64
6. Step 6: Final answer
   x = 42,108.67