Finding the Fourth Proportional to 72,610.50, 108,526.45 and 65,478.45

Step by Step Solution

1. Step 1: Write the proportion equation
   72,610.50 : 108,526.45 = 65,478.45 : x
2. Step 2: Convert to fraction form
   72,610.50/108,526.45 = 65,478.45/x
3. Step 3: Cross multiply
   72,610.50x = 108,526.45 × 65,478.45
4. Step 4: Simplify right side
   72,610.50x = 7,106,143,730.00
5. Step 5: Solve for x
   x = 7,106,143,730.00/72,610.50
6. Step 6: Final answer
   x = 97,866.61