Finding the Fourth Proportional to 139,581.34, 209,459.52 and 73,074.70

Step by Step Solution

1. Step 1: Write the proportion equation
   139,581.34 : 209,459.52 = 73,074.70 : x
2. Step 2: Convert to fraction form
   139,581.34/209,459.52 = 73,074.70/x
3. Step 3: Cross multiply
   139,581.34x = 209,459.52 × 73,074.70
4. Step 4: Simplify right side
   139,581.34x = 15,306,191,586.14
5. Step 5: Solve for x
   x = 15,306,191,586.14/139,581.34
6. Step 6: Final answer
   x = 109,657.86