Finding the Fourth Proportional to 77,492.72, 116,290.20 and 28,244.72

Step by Step Solution

1. Step 1: Write the proportion equation
   77,492.72 : 116,290.20 = 28,244.72 : x
2. Step 2: Convert to fraction form
   77,492.72/116,290.20 = 28,244.72/x
3. Step 3: Cross multiply
   77,492.72x = 116,290.20 × 28,244.72
4. Step 4: Simplify right side
   77,492.72x = 3,284,584,137.74
5. Step 5: Solve for x
   x = 3,284,584,137.74/77,492.72
6. Step 6: Final answer
   x = 42,385.71