Finding the Fourth Proportional to 98.72, 147.83 and 73.00

Step by Step Solution

1. Step 1: Write the proportion equation
   98.72 : 147.83 = 73.00 : x
2. Step 2: Convert to fraction form
   98.72/147.83 = 73.00/x
3. Step 3: Cross multiply
   98.72x = 147.83 × 73.00
4. Step 4: Simplify right side
   98.72x = 10,791.41
5. Step 5: Solve for x
   x = 10,791.41/98.72
6. Step 6: Final answer
   x = 109.31