Finding the Fourth Proportional to 72,089.28, 107,467.56 and 70,953.12

Step by Step Solution

1. Step 1: Write the proportion equation
   72,089.28 : 107,467.56 = 70,953.12 : x
2. Step 2: Convert to fraction form
   72,089.28/107,467.56 = 70,953.12/x
3. Step 3: Cross multiply
   72,089.28x = 107,467.56 × 70,953.12
4. Step 4: Simplify right side
   72,089.28x = 7,625,158,680.79
5. Step 5: Solve for x
   x = 7,625,158,680.79/72,089.28
6. Step 6: Final answer
   x = 105,773.82