Finding the Fourth Proportional to 93,689.72, 140,534.82 and 38,285.72

Step by Step Solution

1. Step 1: Write the proportion equation
   93,689.72 : 140,534.82 = 38,285.72 : x
2. Step 2: Convert to fraction form
   93,689.72/140,534.82 = 38,285.72/x
3. Step 3: Cross multiply
   93,689.72x = 140,534.82 × 38,285.72
4. Step 4: Simplify right side
   93,689.72x = 5,380,476,768.77
5. Step 5: Solve for x
   x = 5,380,476,768.77/93,689.72
6. Step 6: Final answer
   x = 57,428.68