Finding the Fourth Proportional to 154,502.70, 213,196.10 and 86,510.22

Step by Step Solution

1. Step 1: Write the proportion equation
   154,502.70 : 213,196.10 = 86,510.22 : x
2. Step 2: Convert to fraction form
   154,502.70/213,196.10 = 86,510.22/x
3. Step 3: Cross multiply
   154,502.70x = 213,196.10 × 86,510.22
4. Step 4: Simplify right side
   154,502.70x = 18,443,641,081.59
5. Step 5: Solve for x
   x = 18,443,641,081.59/154,502.70
6. Step 6: Final answer
   x = 119,374.23