Finding the Fourth Proportional to 55,877.83, 77,111.57 and 30,384.21

Step by Step Solution

1. Step 1: Write the proportion equation
   55,877.83 : 77,111.57 = 30,384.21 : x
2. Step 2: Convert to fraction form
   55,877.83/77,111.57 = 30,384.21/x
3. Step 3: Cross multiply
   55,877.83x = 77,111.57 × 30,384.21
4. Step 4: Simplify right side
   55,877.83x = 2,342,974,136.31
5. Step 5: Solve for x
   x = 2,342,974,136.31/55,877.83
6. Step 6: Final answer
   x = 41,930.30