Finding the Fourth Proportional to 155,300.30, 232,893.12 and 55,433.78

Step by Step Solution

1. Step 1: Write the proportion equation
   155,300.30 : 232,893.12 = 55,433.78 : x
2. Step 2: Convert to fraction form
   155,300.30/232,893.12 = 55,433.78/x
3. Step 3: Cross multiply
   155,300.30x = 232,893.12 × 55,433.78
4. Step 4: Simplify right side
   155,300.30x = 12,910,145,977.59
5. Step 5: Solve for x
   x = 12,910,145,977.59/155,300.30
6. Step 6: Final answer
   x = 83,130.21