Finding the Fourth Proportional to 99.60, 149.33 and 61.01

Step by Step Solution

1. Step 1: Write the proportion equation
   99.60 : 149.33 = 61.01 : x
2. Step 2: Convert to fraction form
   99.60/149.33 = 61.01/x
3. Step 3: Cross multiply
   99.60x = 149.33 × 61.01
4. Step 4: Simplify right side
   99.60x = 9,111.15
5. Step 5: Solve for x
   x = 9,111.15/99.60
6. Step 6: Final answer
   x = 91.48