Finding the Fourth Proportional to 139,745,147.40, 209,656,608.51 and 60,968,547.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,745,147.40 : 209,656,608.51 = 60,968,547.72 : x
2. Step 2: Convert to fraction form
   139,745,147.40/209,656,608.51 = 60,968,547.72/x
3. Step 3: Cross multiply
   139,745,147.40x = 209,656,608.51 × 60,968,547.72
4. Step 4: Simplify right side
   139,745,147.40x = 12,782,458,940,755,292
5. Step 5: Solve for x
   x = 12,782,458,940,755,292/139,745,147.40
6. Step 6: Final answer
   x = 91,469,787.53