Finding the Fourth Proportional to 105,907,688.72, 146,164,444.92 and 64,114,781.30

Step by Step Solution

1. Step 1: Write the proportion equation
   105,907,688.72 : 146,164,444.92 = 64,114,781.30 : x
2. Step 2: Convert to fraction form
   105,907,688.72/146,164,444.92 = 64,114,781.30/x
3. Step 3: Cross multiply
   105,907,688.72x = 146,164,444.92 × 64,114,781.30
4. Step 4: Simplify right side
   105,907,688.72x = 9,371,301,419,881,694
5. Step 5: Solve for x
   x = 9,371,301,419,881,694/105,907,688.72
6. Step 6: Final answer
   x = 88,485,562.60