Finding the Fourth Proportional to 191,103.63, 286,617.78 and 181,620.15

Step by Step Solution

1. Step 1: Write the proportion equation
   191,103.63 : 286,617.78 = 181,620.15 : x
2. Step 2: Convert to fraction form
   191,103.63/286,617.78 = 181,620.15/x
3. Step 3: Cross multiply
   191,103.63x = 286,617.78 × 181,620.15
4. Step 4: Simplify right side
   191,103.63x = 52,055,564,196.27
5. Step 5: Solve for x
   x = 52,055,564,196.27/191,103.63
6. Step 6: Final answer
   x = 272,394.43