Finding the Fourth Proportional to 55,617.30, 76,751.91 and 30,123.72

Step by Step Solution

1. Step 1: Write the proportion equation
   55,617.30 : 76,751.91 = 30,123.72 : x
2. Step 2: Convert to fraction form
   55,617.30/76,751.91 = 30,123.72/x
3. Step 3: Cross multiply
   55,617.30x = 76,751.91 × 30,123.72
4. Step 4: Simplify right side
   55,617.30x = 2,312,053,046.31
5. Step 5: Solve for x
   x = 2,312,053,046.31/55,617.30
6. Step 6: Final answer
   x = 41,570.75