Finding the Fourth Proportional to 109,870.07, 164,635.47 and 74,191.57

Step by Step Solution

1. Step 1: Write the proportion equation
   109,870.07 : 164,635.47 = 74,191.57 : x
2. Step 2: Convert to fraction form
   109,870.07/164,635.47 = 74,191.57/x
3. Step 3: Cross multiply
   109,870.07x = 164,635.47 × 74,191.57
4. Step 4: Simplify right side
   109,870.07x = 12,214,563,585.40
5. Step 5: Solve for x
   x = 12,214,563,585.40/109,870.07
6. Step 6: Final answer
   x = 111,172.81