Finding the Fourth Proportional to 103,185.63, 154,778.69 and 28,306.86

Step by Step Solution

1. Step 1: Write the proportion equation
   103,185.63 : 154,778.69 = 28,306.86 : x
2. Step 2: Convert to fraction form
   103,185.63/154,778.69 = 28,306.86/x
3. Step 3: Cross multiply
   103,185.63x = 154,778.69 × 28,306.86
4. Step 4: Simplify right side
   103,185.63x = 4,381,298,567.28
5. Step 5: Solve for x
   x = 4,381,298,567.28/103,185.63
6. Step 6: Final answer
   x = 42,460.36