Finding the Fourth Proportional to 151,990.71, 227,985.69 and 142,742.37

Step by Step Solution

1. Step 1: Write the proportion equation
   151,990.71 : 227,985.69 = 142,742.37 : x
2. Step 2: Convert to fraction form
   151,990.71/227,985.69 = 142,742.37/x
3. Step 3: Cross multiply
   151,990.71x = 227,985.69 × 142,742.37
4. Step 4: Simplify right side
   151,990.71x = 32,543,217,716.69
5. Step 5: Solve for x
   x = 32,543,217,716.69/151,990.71
6. Step 6: Final answer
   x = 214,113.20