Finding the Fourth Proportional to 106,473.15, 159,377.49 and 78,424.83

Step by Step Solution

1. Step 1: Write the proportion equation
   106,473.15 : 159,377.49 = 78,424.83 : x
2. Step 2: Convert to fraction form
   106,473.15/159,377.49 = 78,424.83/x
3. Step 3: Cross multiply
   106,473.15x = 159,377.49 × 78,424.83
4. Step 4: Simplify right side
   106,473.15x = 12,499,152,559.08
5. Step 5: Solve for x
   x = 12,499,152,559.08/106,473.15
6. Step 6: Final answer
   x = 117,392.53