Finding the Fourth Proportional to 142,148.72, 196,083.01 and 91,847.72

Step by Step Solution

1. Step 1: Write the proportion equation
   142,148.72 : 196,083.01 = 91,847.72 : x
2. Step 2: Convert to fraction form
   142,148.72/196,083.01 = 91,847.72/x
3. Step 3: Cross multiply
   142,148.72x = 196,083.01 × 91,847.72
4. Step 4: Simplify right side
   142,148.72x = 18,009,778,027.48
5. Step 5: Solve for x
   x = 18,009,778,027.48/142,148.72
6. Step 6: Final answer
   x = 126,696.73