Finding the Fourth Proportional to 354,128.76, 488,680.29 and 192,983.31

Step by Step Solution

1. Step 1: Write the proportion equation
   354,128.76 : 488,680.29 = 192,983.31 : x
2. Step 2: Convert to fraction form
   354,128.76/488,680.29 = 192,983.31/x
3. Step 3: Cross multiply
   354,128.76x = 488,680.29 × 192,983.31
4. Step 4: Simplify right side
   354,128.76x = 94,307,139,895.96
5. Step 5: Solve for x
   x = 94,307,139,895.96/354,128.76
6. Step 6: Final answer
   x = 266,307.49