Finding the Fourth Proportional to 82.47, 123.61 and 43.93

Step by Step Solution

1. Step 1: Write the proportion equation
   82.47 : 123.61 = 43.93 : x
2. Step 2: Convert to fraction form
   82.47/123.61 = 43.93/x
3. Step 3: Cross multiply
   82.47x = 123.61 × 43.93
4. Step 4: Simplify right side
   82.47x = 5,430.19
5. Step 5: Solve for x
   x = 5,430.19/82.47
6. Step 6: Final answer
   x = 65.84