Finding the Fourth Proportional to 401,618.72, 602,043.91 and 148,831.31

Step by Step Solution

1. Step 1: Write the proportion equation
   401,618.72 : 602,043.91 = 148,831.31 : x
2. Step 2: Convert to fraction form
   401,618.72/602,043.91 = 148,831.31/x
3. Step 3: Cross multiply
   401,618.72x = 602,043.91 × 148,831.31
4. Step 4: Simplify right side
   401,618.72x = 89,602,983,802.82
5. Step 5: Solve for x
   x = 89,602,983,802.82/401,618.72
6. Step 6: Final answer
   x = 223,104.60