Finding the Fourth Proportional to 93,772.50, 140,658.78 and 28,108.50

Step by Step Solution

1. Step 1: Write the proportion equation
   93,772.50 : 140,658.78 = 28,108.50 : x
2. Step 2: Convert to fraction form
   93,772.50/140,658.78 = 28,108.50/x
3. Step 3: Cross multiply
   93,772.50x = 140,658.78 × 28,108.50
4. Step 4: Simplify right side
   93,772.50x = 3,953,707,317.63
5. Step 5: Solve for x
   x = 3,953,707,317.63/93,772.50
6. Step 6: Final answer
   x = 42,162.76