Finding the Fourth Proportional to 72,631.96, 108,919.86 and 28,252.72

Step by Step Solution

1. Step 1: Write the proportion equation
   72,631.96 : 108,919.86 = 28,252.72 : x
2. Step 2: Convert to fraction form
   72,631.96/108,919.86 = 28,252.72/x
3. Step 3: Cross multiply
   72,631.96x = 108,919.86 × 28,252.72
4. Step 4: Simplify right side
   72,631.96x = 3,077,282,307.02
5. Step 5: Solve for x
   x = 3,077,282,307.02/72,631.96
6. Step 6: Final answer
   x = 42,368.16