Finding the Fourth Proportional to 91,493.94, 137,254.03 and 28,319.61

Step by Step Solution

1. Step 1: Write the proportion equation
   91,493.94 : 137,254.03 = 28,319.61 : x
2. Step 2: Convert to fraction form
   91,493.94/137,254.03 = 28,319.61/x
3. Step 3: Cross multiply
   91,493.94x = 137,254.03 × 28,319.61
4. Step 4: Simplify right side
   91,493.94x = 3,886,981,150.63
5. Step 5: Solve for x
   x = 3,886,981,150.63/91,493.94
6. Step 6: Final answer
   x = 42,483.48