Finding the Fourth Proportional to 140,830.10, 210,856.35 and 109,726.10

Step by Step Solution

1. Step 1: Write the proportion equation
   140,830.10 : 210,856.35 = 109,726.10 : x
2. Step 2: Convert to fraction form
   140,830.10/210,856.35 = 109,726.10/x
3. Step 3: Cross multiply
   140,830.10x = 210,856.35 × 109,726.10
4. Step 4: Simplify right side
   140,830.10x = 23,136,444,945.74
5. Step 5: Solve for x
   x = 23,136,444,945.74/140,830.10
6. Step 6: Final answer
   x = 164,286.22