Finding the Fourth Proportional to 70,128.72, 96,780.15 and 38,298.96

Step by Step Solution

1. Step 1: Write the proportion equation
   70,128.72 : 96,780.15 = 38,298.96 : x
2. Step 2: Convert to fraction form
   70,128.72/96,780.15 = 38,298.96/x
3. Step 3: Cross multiply
   70,128.72x = 96,780.15 × 38,298.96
4. Step 4: Simplify right side
   70,128.72x = 3,706,579,093.64
5. Step 5: Solve for x
   x = 3,706,579,093.64/70,128.72
6. Step 6: Final answer
   x = 52,853.94