Finding the Fourth Proportional to 147,413,462.20, 220,256,665.61 and 142,258,096.90

Step by Step Solution

1. Step 1: Write the proportion equation
   147,413,462.20 : 220,256,665.61 = 142,258,096.90 : x
2. Step 2: Convert to fraction form
   147,413,462.20/220,256,665.61 = 142,258,096.90/x
3. Step 3: Cross multiply
   147,413,462.20x = 220,256,665.61 × 142,258,096.90
4. Step 4: Simplify right side
   147,413,462.20x = 31,333,294,079,218,280
5. Step 5: Solve for x
   x = 31,333,294,079,218,280/147,413,462.20
6. Step 6: Final answer
   x = 212,553,817.08