Finding the Fourth Proportional to 55,641.25, 76,784.96 and 30,490.75

Step by Step Solution

1. Step 1: Write the proportion equation
   55,641.25 : 76,784.96 = 30,490.75 : x
2. Step 2: Convert to fraction form
   55,641.25/76,784.96 = 30,490.75/x
3. Step 3: Cross multiply
   55,641.25x = 76,784.96 × 30,490.75
4. Step 4: Simplify right side
   55,641.25x = 2,341,231,019.12
5. Step 5: Solve for x
   x = 2,341,231,019.12/55,641.25
6. Step 6: Final answer
   x = 42,077.25