Finding the Fourth Proportional to 243,405.20, 335,898.72 and 146,665.07

Step by Step Solution

1. Step 1: Write the proportion equation
   243,405.20 : 335,898.72 = 146,665.07 : x
2. Step 2: Convert to fraction form
   243,405.20/335,898.72 = 146,665.07/x
3. Step 3: Cross multiply
   243,405.20x = 335,898.72 × 146,665.07
4. Step 4: Simplify right side
   243,405.20x = 49,264,607,602.22
5. Step 5: Solve for x
   x = 49,264,607,602.22/243,405.20
6. Step 6: Final answer
   x = 202,397.52