Finding the Fourth Proportional to 121,377.30, 182,109.15 and 117,057.30

Step by Step Solution

1. Step 1: Write the proportion equation
   121,377.30 : 182,109.15 = 117,057.30 : x
2. Step 2: Convert to fraction form
   121,377.30/182,109.15 = 117,057.30/x
3. Step 3: Cross multiply
   121,377.30x = 182,109.15 × 117,057.30
4. Step 4: Simplify right side
   121,377.30x = 21,317,205,404.30
5. Step 5: Solve for x
   x = 21,317,205,404.30/121,377.30
6. Step 6: Final answer
   x = 175,627.61