Finding the Fourth Proportional to 72,637.48, 109,139.46 and 69,685.16

Step by Step Solution

1. Step 1: Write the proportion equation
   72,637.48 : 109,139.46 = 69,685.16 : x
2. Step 2: Convert to fraction form
   72,637.48/109,139.46 = 69,685.16/x
3. Step 3: Cross multiply
   72,637.48x = 109,139.46 × 69,685.16
4. Step 4: Simplify right side
   72,637.48x = 7,605,400,732.41
5. Step 5: Solve for x
   x = 7,605,400,732.41/72,637.48
6. Step 6: Final answer
   x = 104,703.53