Finding the Fourth Proportional to 55,870.89, 77,100.71 and 30,377.76

Step by Step Solution

1. Step 1: Write the proportion equation
   55,870.89 : 77,100.71 = 30,377.76 : x
2. Step 2: Convert to fraction form
   55,870.89/77,100.71 = 30,377.76/x
3. Step 3: Cross multiply
   55,870.89x = 77,100.71 × 30,377.76
4. Step 4: Simplify right side
   55,870.89x = 2,342,146,864.21
5. Step 5: Solve for x
   x = 2,342,146,864.21/55,870.89
6. Step 6: Final answer
   x = 41,920.70