Finding the Fourth Proportional to 100.86, 151.39 and 59.18

Step by Step Solution

1. Step 1: Write the proportion equation
   100.86 : 151.39 = 59.18 : x
2. Step 2: Convert to fraction form
   100.86/151.39 = 59.18/x
3. Step 3: Cross multiply
   100.86x = 151.39 × 59.18
4. Step 4: Simplify right side
   100.86x = 8,959.26
5. Step 5: Solve for x
   x = 8,959.26/100.86
6. Step 6: Final answer
   x = 88.83