Finding the Fourth Proportional to 123,434.21, 185,225.27 and 113,395.88

Step by Step Solution

1. Step 1: Write the proportion equation
   123,434.21 : 185,225.27 = 113,395.88 : x
2. Step 2: Convert to fraction form
   123,434.21/185,225.27 = 113,395.88/x
3. Step 3: Cross multiply
   123,434.21x = 185,225.27 × 113,395.88
4. Step 4: Simplify right side
   123,434.21x = 21,003,782,385.97
5. Step 5: Solve for x
   x = 21,003,782,385.97/123,434.21
6. Step 6: Final answer
   x = 170,161.76