Finding the Fourth Proportional to 401,617.72, 602,042.41 and 148,830.31

Step by Step Solution

1. Step 1: Write the proportion equation
   401,617.72 : 602,042.41 = 148,830.31 : x
2. Step 2: Convert to fraction form
   401,617.72/602,042.41 = 148,830.31/x
3. Step 3: Cross multiply
   401,617.72x = 602,042.41 × 148,830.31
4. Step 4: Simplify right side
   401,617.72x = 89,602,158,513.45
5. Step 5: Solve for x
   x = 89,602,158,513.45/401,617.72
6. Step 6: Final answer
   x = 223,103.10