Finding the Fourth Proportional to 109,317.16, 164,053.50 and 84,382.12

Step by Step Solution

1. Step 1: Write the proportion equation
   109,317.16 : 164,053.50 = 84,382.12 : x
2. Step 2: Convert to fraction form
   109,317.16/164,053.50 = 84,382.12/x
3. Step 3: Cross multiply
   109,317.16x = 164,053.50 × 84,382.12
4. Step 4: Simplify right side
   109,317.16x = 13,843,182,123.42
5. Step 5: Solve for x
   x = 13,843,182,123.42/109,317.16
6. Step 6: Final answer
   x = 126,633.20