Finding the Fourth Proportional to 142,713.81, 196,850.13 and 91,790.98

Step by Step Solution

1. Step 1: Write the proportion equation
   142,713.81 : 196,850.13 = 91,790.98 : x
2. Step 2: Convert to fraction form
   142,713.81/196,850.13 = 91,790.98/x
3. Step 3: Cross multiply
   142,713.81x = 196,850.13 × 91,790.98
4. Step 4: Simplify right side
   142,713.81x = 18,069,066,345.83
5. Step 5: Solve for x
   x = 18,069,066,345.83/142,713.81
6. Step 6: Final answer
   x = 126,610.50