Finding the Fourth Proportional to 100.67, 150.83 and 52.61

Step by Step Solution

1. Step 1: Write the proportion equation
   100.67 : 150.83 = 52.61 : x
2. Step 2: Convert to fraction form
   100.67/150.83 = 52.61/x
3. Step 3: Cross multiply
   100.67x = 150.83 × 52.61
4. Step 4: Simplify right side
   100.67x = 7,935.28
5. Step 5: Solve for x
   x = 7,935.28/100.67
6. Step 6: Final answer
   x = 78.82