Finding the Fourth Proportional to 101.83, 152.72 and 61.15

Step by Step Solution

1. Step 1: Write the proportion equation
   101.83 : 152.72 = 61.15 : x
2. Step 2: Convert to fraction form
   101.83/152.72 = 61.15/x
3. Step 3: Cross multiply
   101.83x = 152.72 × 61.15
4. Step 4: Simplify right side
   101.83x = 9,338.60
5. Step 5: Solve for x
   x = 9,338.60/101.83
6. Step 6: Final answer
   x = 91.71