Finding the Fourth Proportional to 103,832.72, 143,289.16 and 56,086.07

Step by Step Solution

1. Step 1: Write the proportion equation
   103,832.72 : 143,289.16 = 56,086.07 : x
2. Step 2: Convert to fraction form
   103,832.72/143,289.16 = 56,086.07/x
3. Step 3: Cross multiply
   103,832.72x = 143,289.16 × 56,086.07
4. Step 4: Simplify right side
   103,832.72x = 8,036,525,858.00
5. Step 5: Solve for x
   x = 8,036,525,858.00/103,832.72
6. Step 6: Final answer
   x = 77,398.78