Finding the Fourth Proportional to 254,111.78, 381,106.02 and 85,588.58

Step by Step Solution

1. Step 1: Write the proportion equation
   254,111.78 : 381,106.02 = 85,588.58 : x
2. Step 2: Convert to fraction form
   254,111.78/381,106.02 = 85,588.58/x
3. Step 3: Cross multiply
   254,111.78x = 381,106.02 × 85,588.58
4. Step 4: Simplify right side
   254,111.78x = 32,618,323,081.25
5. Step 5: Solve for x
   x = 32,618,323,081.25/254,111.78
6. Step 6: Final answer
   x = 128,362.11