Finding the Fourth Proportional to 68,066.91, 102,100.35 and 28,085.31

Step by Step Solution

1. Step 1: Write the proportion equation
   68,066.91 : 102,100.35 = 28,085.31 : x
2. Step 2: Convert to fraction form
   68,066.91/102,100.35 = 28,085.31/x
3. Step 3: Cross multiply
   68,066.91x = 102,100.35 × 28,085.31
4. Step 4: Simplify right side
   68,066.91x = 2,867,519,980.86
5. Step 5: Solve for x
   x = 2,867,519,980.86/68,066.91
6. Step 6: Final answer
   x = 42,127.96