Finding the Fourth Proportional to 240,387.86, 360,665.42 and 90,671.10

Step by Step Solution

1. Step 1: Write the proportion equation
   240,387.86 : 360,665.42 = 90,671.10 : x
2. Step 2: Convert to fraction form
   240,387.86/360,665.42 = 90,671.10/x
3. Step 3: Cross multiply
   240,387.86x = 360,665.42 × 90,671.10
4. Step 4: Simplify right side
   240,387.86x = 32,701,929,910.01
5. Step 5: Solve for x
   x = 32,701,929,910.01/240,387.86
6. Step 6: Final answer
   x = 136,038.20