Finding the Fourth Proportional to 116,669.86, 160,962.30 and 76,406.58

Step by Step Solution

1. Step 1: Write the proportion equation
   116,669.86 : 160,962.30 = 76,406.58 : x
2. Step 2: Convert to fraction form
   116,669.86/160,962.30 = 76,406.58/x
3. Step 3: Cross multiply
   116,669.86x = 160,962.30 × 76,406.58
4. Step 4: Simplify right side
   116,669.86x = 12,298,578,851.93
5. Step 5: Solve for x
   x = 12,298,578,851.93/116,669.86
6. Step 6: Final answer
   x = 105,413.50