Finding the Fourth Proportional to 103,808.18, 143,255.30 and 56,061.52

Step by Step Solution

1. Step 1: Write the proportion equation
   103,808.18 : 143,255.30 = 56,061.52 : x
2. Step 2: Convert to fraction form
   103,808.18/143,255.30 = 56,061.52/x
3. Step 3: Cross multiply
   103,808.18x = 143,255.30 × 56,061.52
4. Step 4: Simplify right side
   103,808.18x = 8,031,109,866.06
5. Step 5: Solve for x
   x = 8,031,109,866.06/103,808.18
6. Step 6: Final answer
   x = 77,364.90