Finding the Fourth Proportional to 105,389,174.16, 158,264,671.50 and 64,687,617

Step by Step Solution

1. Step 1: Write the proportion equation
   105,389,174.16 : 158,264,671.50 = 64,687,617 : x
2. Step 2: Convert to fraction form
   105,389,174.16/158,264,671.50 = 64,687,617/x
3. Step 3: Cross multiply
   105,389,174.16x = 158,264,671.50 × 64,687,617
4. Step 4: Simplify right side
   105,389,174.16x = 10,237,764,454,622,816
5. Step 5: Solve for x
   x = 10,237,764,454,622,816/105,389,174.16
6. Step 6: Final answer
   x = 97,142,467.77