Finding the Fourth Proportional to 103,223.42, 154,978.50 and 53,340.38

Step by Step Solution

1. Step 1: Write the proportion equation
   103,223.42 : 154,978.50 = 53,340.38 : x
2. Step 2: Convert to fraction form
   103,223.42/154,978.50 = 53,340.38/x
3. Step 3: Cross multiply
   103,223.42x = 154,978.50 × 53,340.38
4. Step 4: Simplify right side
   103,223.42x = 8,266,612,081.83
5. Step 5: Solve for x
   x = 8,266,612,081.83/103,223.42
6. Step 6: Final answer
   x = 80,084.66