Finding the Fourth Proportional to 107,271.46, 148,011.60 and 72,828.10

Step by Step Solution

1. Step 1: Write the proportion equation
   107,271.46 : 148,011.60 = 72,828.10 : x
2. Step 2: Convert to fraction form
   107,271.46/148,011.60 = 72,828.10/x
3. Step 3: Cross multiply
   107,271.46x = 148,011.60 × 72,828.10
4. Step 4: Simplify right side
   107,271.46x = 10,779,403,605.96
5. Step 5: Solve for x
   x = 10,779,403,605.96/107,271.46
6. Step 6: Final answer
   x = 100,487.15