Finding the Fourth Proportional to 103,263.72, 142,238.42 and 72,996.99

Step by Step Solution

1. Step 1: Write the proportion equation
   103,263.72 : 142,238.42 = 72,996.99 : x
2. Step 2: Convert to fraction form
   103,263.72/142,238.42 = 72,996.99/x
3. Step 3: Cross multiply
   103,263.72x = 142,238.42 × 72,996.99
4. Step 4: Simplify right side
   103,263.72x = 10,382,976,964.50
5. Step 5: Solve for x
   x = 10,382,976,964.50/103,263.72
6. Step 6: Final answer
   x = 100,548.16