Finding the Fourth Proportional to 155,110.94, 214,134.72 and 104,390.30

Step by Step Solution

1. Step 1: Write the proportion equation
   155,110.94 : 214,134.72 = 104,390.30 : x
2. Step 2: Convert to fraction form
   155,110.94/214,134.72 = 104,390.30/x
3. Step 3: Cross multiply
   155,110.94x = 214,134.72 × 104,390.30
4. Step 4: Simplify right side
   155,110.94x = 22,353,588,196.55
5. Step 5: Solve for x
   x = 22,353,588,196.55/155,110.94
6. Step 6: Final answer
   x = 144,113.55