Finding the Fourth Proportional to 70,307.72, 105,462.02 and 28,754.72

Step by Step Solution

1. Step 1: Write the proportion equation
   70,307.72 : 105,462.02 = 28,754.72 : x
2. Step 2: Convert to fraction form
   70,307.72/105,462.02 = 28,754.72/x
3. Step 3: Cross multiply
   70,307.72x = 105,462.02 × 28,754.72
4. Step 4: Simplify right side
   70,307.72x = 3,032,530,855.73
5. Step 5: Solve for x
   x = 3,032,530,855.73/70,307.72
6. Step 6: Final answer
   x = 43,132.26