Finding the Fourth Proportional to 340,408.72, 510,688.91 and 103,769.83

Step by Step Solution

1. Step 1: Write the proportion equation
   340,408.72 : 510,688.91 = 103,769.83 : x
2. Step 2: Convert to fraction form
   340,408.72/510,688.91 = 103,769.83/x
3. Step 3: Cross multiply
   340,408.72x = 510,688.91 × 103,769.83
4. Step 4: Simplify right side
   340,408.72x = 52,994,101,373.59
5. Step 5: Solve for x
   x = 52,994,101,373.59/340,408.72
6. Step 6: Final answer
   x = 155,677.86