Finding the Fourth Proportional to 105,285.59, 145,047.80 and 73,397.51

Step by Step Solution

1. Step 1: Write the proportion equation
   105,285.59 : 145,047.80 = 73,397.51 : x
2. Step 2: Convert to fraction form
   105,285.59/145,047.80 = 73,397.51/x
3. Step 3: Cross multiply
   105,285.59x = 145,047.80 × 73,397.51
4. Step 4: Simplify right side
   105,285.59x = 10,646,147,350.98
5. Step 5: Solve for x
   x = 10,646,147,350.98/105,285.59
6. Step 6: Final answer
   x = 101,116.85