Finding the Fourth Proportional to 103,839.74, 143,298.72 and 56,093.08

Step by Step Solution

1. Step 1: Write the proportion equation
   103,839.74 : 143,298.72 = 56,093.08 : x
2. Step 2: Convert to fraction form
   103,839.74/143,298.72 = 56,093.08/x
3. Step 3: Cross multiply
   103,839.74x = 143,298.72 × 56,093.08
4. Step 4: Simplify right side
   103,839.74x = 8,038,066,564.86
5. Step 5: Solve for x
   x = 8,038,066,564.86/103,839.74
6. Step 6: Final answer
   x = 77,408.38