Finding the Fourth Proportional to 39,131.56, 58,695.18 and 28,612.36

Step by Step Solution

1. Step 1: Write the proportion equation
   39,131.56 : 58,695.18 = 28,612.36 : x
2. Step 2: Convert to fraction form
   39,131.56/58,695.18 = 28,612.36/x
3. Step 3: Cross multiply
   39,131.56x = 58,695.18 × 28,612.36
4. Step 4: Simplify right side
   39,131.56x = 1,679,407,620.42
5. Step 5: Solve for x
   x = 1,679,407,620.42/39,131.56
6. Step 6: Final answer
   x = 42,916.96