Finding the Fourth Proportional to 109,407.18, 164,138.45 and 30,521.37

Step by Step Solution

1. Step 1: Write the proportion equation
   109,407.18 : 164,138.45 = 30,521.37 : x
2. Step 2: Convert to fraction form
   109,407.18/164,138.45 = 30,521.37/x
3. Step 3: Cross multiply
   109,407.18x = 164,138.45 × 30,521.37
4. Step 4: Simplify right side
   109,407.18x = 5,009,730,211.07
5. Step 5: Solve for x
   x = 5,009,730,211.07/109,407.18
6. Step 6: Final answer
   x = 45,789.78