Finding the Fourth Proportional to 353,678.55, 488,061.47 and 192,530.25

Step by Step Solution

1. Step 1: Write the proportion equation
   353,678.55 : 488,061.47 = 192,530.25 : x
2. Step 2: Convert to fraction form
   353,678.55/488,061.47 = 192,530.25/x
3. Step 3: Cross multiply
   353,678.55x = 488,061.47 × 192,530.25
4. Step 4: Simplify right side
   353,678.55x = 93,966,595,871.82
5. Step 5: Solve for x
   x = 93,966,595,871.82/353,678.55
6. Step 6: Final answer
   x = 265,683.62