Finding the Fourth Proportional to 117,042,318.64, 161,518,413.72 and 64,834,735.78

Step by Step Solution

1. Step 1: Write the proportion equation
   117,042,318.64 : 161,518,413.72 = 64,834,735.78 : x
2. Step 2: Convert to fraction form
   117,042,318.64/161,518,413.72 = 64,834,735.78/x
3. Step 3: Cross multiply
   117,042,318.64x = 161,518,413.72 × 64,834,735.78
4. Step 4: Simplify right side
   117,042,318.64x = 10,472,003,677,140,928
5. Step 5: Solve for x
   x = 10,472,003,677,140,928/117,042,318.64
6. Step 6: Final answer
   x = 89,471,943.13