Finding the Fourth Proportional to 216,650,291.28, 298,898,945.82 and 142,350,844.56

Step by Step Solution

1. Step 1: Write the proportion equation
   216,650,291.28 : 298,898,945.82 = 142,350,844.56 : x
2. Step 2: Convert to fraction form
   216,650,291.28/298,898,945.82 = 142,350,844.56/x
3. Step 3: Cross multiply
   216,650,291.28x = 298,898,945.82 × 142,350,844.56
4. Step 4: Simplify right side
   216,650,291.28x = 42,548,517,375,570,680
5. Step 5: Solve for x
   x = 42,548,517,375,570,680/216,650,291.28
6. Step 6: Final answer
   x = 196,392,615.60