Finding the Fourth Proportional to 103,786.01, 155,679.15 and 28,906.37

Step by Step Solution

1. Step 1: Write the proportion equation
   103,786.01 : 155,679.15 = 28,906.37 : x
2. Step 2: Convert to fraction form
   103,786.01/155,679.15 = 28,906.37/x
3. Step 3: Cross multiply
   103,786.01x = 155,679.15 × 28,906.37
4. Step 4: Simplify right side
   103,786.01x = 4,500,118,332.79
5. Step 5: Solve for x
   x = 4,500,118,332.79/103,786.01
6. Step 6: Final answer
   x = 43,359.59