Finding the Fourth Proportional to 99.98, 149.98 and 59.39

Step by Step Solution

1. Step 1: Write the proportion equation
   99.98 : 149.98 = 59.39 : x
2. Step 2: Convert to fraction form
   99.98/149.98 = 59.39/x
3. Step 3: Cross multiply
   99.98x = 149.98 × 59.39
4. Step 4: Simplify right side
   99.98x = 8,906.41
5. Step 5: Solve for x
   x = 8,906.41/99.98
6. Step 6: Final answer
   x = 89.08