Finding the Fourth Proportional to 385,003.43, 577,603.56 and 148,282.55

Step by Step Solution

1. Step 1: Write the proportion equation
   385,003.43 : 577,603.56 = 148,282.55 : x
2. Step 2: Convert to fraction form
   385,003.43/577,603.56 = 148,282.55/x
3. Step 3: Cross multiply
   385,003.43x = 577,603.56 × 148,282.55
4. Step 4: Simplify right side
   385,003.43x = 85,648,525,877.86
5. Step 5: Solve for x
   x = 85,648,525,877.86/385,003.43
6. Step 6: Final answer
   x = 222,461.72