Finding the Fourth Proportional to 78,535.23, 108,444.02 and 72,836.79

Step by Step Solution

1. Step 1: Write the proportion equation
   78,535.23 : 108,444.02 = 72,836.79 : x
2. Step 2: Convert to fraction form
   78,535.23/108,444.02 = 72,836.79/x
3. Step 3: Cross multiply
   78,535.23x = 108,444.02 × 72,836.79
4. Step 4: Simplify right side
   78,535.23x = 7,898,713,947.31
5. Step 5: Solve for x
   x = 7,898,713,947.31/78,535.23
6. Step 6: Final answer
   x = 100,575.42