Finding the Fourth Proportional to 55,810.91, 77,019.86 and 30,317.75

Step by Step Solution

1. Step 1: Write the proportion equation
   55,810.91 : 77,019.86 = 30,317.75 : x
2. Step 2: Convert to fraction form
   55,810.91/77,019.86 = 30,317.75/x
3. Step 3: Cross multiply
   55,810.91x = 77,019.86 × 30,317.75
4. Step 4: Simplify right side
   55,810.91x = 2,335,068,323.83
5. Step 5: Solve for x
   x = 2,335,068,323.83/55,810.91
6. Step 6: Final answer
   x = 41,838.93