Finding the Fourth Proportional to 107,784.56, 161,746.04 and 72,285.98

Step by Step Solution

1. Step 1: Write the proportion equation
   107,784.56 : 161,746.04 = 72,285.98 : x
2. Step 2: Convert to fraction form
   107,784.56/161,746.04 = 72,285.98/x
3. Step 3: Cross multiply
   107,784.56x = 161,746.04 × 72,285.98
4. Step 4: Simplify right side
   107,784.56x = 11,691,970,384.50
5. Step 5: Solve for x
   x = 11,691,970,384.50/107,784.56
6. Step 6: Final answer
   x = 108,475.37