Finding the Fourth Proportional to 126,545.83, 174,667.89 and 78,770.81

Step by Step Solution

1. Step 1: Write the proportion equation
   126,545.83 : 174,667.89 = 78,770.81 : x
2. Step 2: Convert to fraction form
   126,545.83/174,667.89 = 78,770.81/x
3. Step 3: Cross multiply
   126,545.83x = 174,667.89 × 78,770.81
4. Step 4: Simplify right side
   126,545.83x = 13,758,731,908.35
5. Step 5: Solve for x
   x = 13,758,731,908.35/126,545.83
6. Step 6: Final answer
   x = 108,725.29