Finding the Fourth Proportional to 103,242.08, 142,323.26 and 72,974.00

Step by Step Solution

1. Step 1: Write the proportion equation
   103,242.08 : 142,323.26 = 72,974.00 : x
2. Step 2: Convert to fraction form
   103,242.08/142,323.26 = 72,974.00/x
3. Step 3: Cross multiply
   103,242.08x = 142,323.26 × 72,974.00
4. Step 4: Simplify right side
   103,242.08x = 10,385,896,498.75
5. Step 5: Solve for x
   x = 10,385,896,498.75/103,242.08
6. Step 6: Final answer
   x = 100,597.52