Finding the Fourth Proportional to 402,002.48, 603,009.18 and 149,185.28

Step by Step Solution

1. Step 1: Write the proportion equation
   402,002.48 : 603,009.18 = 149,185.28 : x
2. Step 2: Convert to fraction form
   402,002.48/603,009.18 = 149,185.28/x
3. Step 3: Cross multiply
   402,002.48x = 603,009.18 × 149,185.28
4. Step 4: Simplify right side
   402,002.48x = 89,960,090,345.82
5. Step 5: Solve for x
   x = 89,960,090,345.82/402,002.48
6. Step 6: Final answer
   x = 223,779.94