Finding the Fourth Proportional to 100.47, 150.86 and 83.46

Step by Step Solution

1. Step 1: Write the proportion equation
   100.47 : 150.86 = 83.46 : x
2. Step 2: Convert to fraction form
   100.47/150.86 = 83.46/x
3. Step 3: Cross multiply
   100.47x = 150.86 × 83.46
4. Step 4: Simplify right side
   100.47x = 12,591.55
5. Step 5: Solve for x
   x = 12,591.55/100.47
6. Step 6: Final answer
   x = 125.32