Finding the Fourth Proportional to 205,054.10, 307,612.83 and 86,726.10

Step by Step Solution

1. Step 1: Write the proportion equation
   205,054.10 : 307,612.83 = 86,726.10 : x
2. Step 2: Convert to fraction form
   205,054.10/307,612.83 = 86,726.10/x
3. Step 3: Cross multiply
   205,054.10x = 307,612.83 × 86,726.10
4. Step 4: Simplify right side
   205,054.10x = 26,678,061,055.86
5. Step 5: Solve for x
   x = 26,678,061,055.86/205,054.10
6. Step 6: Final answer
   x = 130,102.55