Finding the Fourth Proportional to 70,650.64, 105,975.69 and 18,060.04

Step by Step Solution

1. Step 1: Write the proportion equation
   70,650.64 : 105,975.69 = 18,060.04 : x
2. Step 2: Convert to fraction form
   70,650.64/105,975.69 = 18,060.04/x
3. Step 3: Cross multiply
   70,650.64x = 105,975.69 × 18,060.04
4. Step 4: Simplify right side
   70,650.64x = 1,913,925,200.43
5. Step 5: Solve for x
   x = 1,913,925,200.43/70,650.64
6. Step 6: Final answer
   x = 27,089.99