Finding the Fourth Proportional to 99.34, 137.06 and 62.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99.34 : 137.06 = 62.50 : x
2. Step 2: Convert to fraction form
   99.34/137.06 = 62.50/x
3. Step 3: Cross multiply
   99.34x = 137.06 × 62.50
4. Step 4: Simplify right side
   99.34x = 8,566.25
5. Step 5: Solve for x
   x = 8,566.25/99.34
6. Step 6: Final answer
   x = 86.23