Finding the Fourth Proportional to 147,277,238.16, 220,915,848.14 and 139,912,843.72

Step by Step Solution

1. Step 1: Write the proportion equation
   147,277,238.16 : 220,915,848.14 = 139,912,843.72 : x
2. Step 2: Convert to fraction form
   147,277,238.16/220,915,848.14 = 139,912,843.72/x
3. Step 3: Cross multiply
   147,277,238.16x = 220,915,848.14 × 139,912,843.72
4. Step 4: Simplify right side
   147,277,238.16x = 30,908,964,536,083,072
5. Step 5: Solve for x
   x = 30,908,964,536,083,072/147,277,238.16
6. Step 6: Final answer
   x = 209,869,256.94