Finding the Fourth Proportional to 103,784.71, 143,168.34 and 65,530.43

Step by Step Solution

1. Step 1: Write the proportion equation
   103,784.71 : 143,168.34 = 65,530.43 : x
2. Step 2: Convert to fraction form
   103,784.71/143,168.34 = 65,530.43/x
3. Step 3: Cross multiply
   103,784.71x = 143,168.34 × 65,530.43
4. Step 4: Simplify right side
   103,784.71x = 9,381,882,882.59
5. Step 5: Solve for x
   x = 9,381,882,882.59/103,784.71
6. Step 6: Final answer
   x = 90,397.54