Finding the Fourth Proportional to 162,340.83, 243,509.63 and 90,339.93

Step by Step Solution

1. Step 1: Write the proportion equation
   162,340.83 : 243,509.63 = 90,339.93 : x
2. Step 2: Convert to fraction form
   162,340.83/243,509.63 = 90,339.93/x
3. Step 3: Cross multiply
   162,340.83x = 243,509.63 × 90,339.93
4. Step 4: Simplify right side
   162,340.83x = 21,998,642,476.83
5. Step 5: Solve for x
   x = 21,998,642,476.83/162,340.83
6. Step 6: Final answer
   x = 135,508.99