Finding the Fourth Proportional to 196,830.30, 271,756.56 and 151,428.18

Step by Step Solution

1. Step 1: Write the proportion equation
   196,830.30 : 271,756.56 = 151,428.18 : x
2. Step 2: Convert to fraction form
   196,830.30/271,756.56 = 151,428.18/x
3. Step 3: Cross multiply
   196,830.30x = 271,756.56 × 151,428.18
4. Step 4: Simplify right side
   196,830.30x = 41,151,601,283.86
5. Step 5: Solve for x
   x = 41,151,601,283.86/196,830.30
6. Step 6: Final answer
   x = 209,071.48