Finding the Fourth Proportional to 71,499.23, 107,270.37 and 64,446.15

Step by Step Solution

1. Step 1: Write the proportion equation
   71,499.23 : 107,270.37 = 64,446.15 : x
2. Step 2: Convert to fraction form
   71,499.23/107,270.37 = 64,446.15/x
3. Step 3: Cross multiply
   71,499.23x = 107,270.37 × 64,446.15
4. Step 4: Simplify right side
   71,499.23x = 6,913,162,623.75
5. Step 5: Solve for x
   x = 6,913,162,623.75/71,499.23
6. Step 6: Final answer
   x = 96,688.63