Finding the Fourth Proportional to 109,764.10, 164,257.35 and 74,772.10

Step by Step Solution

1. Step 1: Write the proportion equation
   109,764.10 : 164,257.35 = 74,772.10 : x
2. Step 2: Convert to fraction form
   109,764.10/164,257.35 = 74,772.10/x
3. Step 3: Cross multiply
   109,764.10x = 164,257.35 × 74,772.10
4. Step 4: Simplify right side
   109,764.10x = 12,281,866,999.94
5. Step 5: Solve for x
   x = 12,281,866,999.94/109,764.10
6. Step 6: Final answer
   x = 111,893.30