Finding the Fourth Proportional to 142,743.06, 197,077.86 and 91,778.67

Step by Step Solution

1. Step 1: Write the proportion equation
   142,743.06 : 197,077.86 = 91,778.67 : x
2. Step 2: Convert to fraction form
   142,743.06/197,077.86 = 91,778.67/x
3. Step 3: Cross multiply
   142,743.06x = 197,077.86 × 91,778.67
4. Step 4: Simplify right side
   142,743.06x = 18,087,543,877.25
5. Step 5: Solve for x
   x = 18,087,543,877.25/142,743.06
6. Step 6: Final answer
   x = 126,714.00