Finding the Fourth Proportional to 116,518.56, 160,781.47 and 64,823.43

Step by Step Solution

1. Step 1: Write the proportion equation
   116,518.56 : 160,781.47 = 64,823.43 : x
2. Step 2: Convert to fraction form
   116,518.56/160,781.47 = 64,823.43/x
3. Step 3: Cross multiply
   116,518.56x = 160,781.47 × 64,823.43
4. Step 4: Simplify right side
   116,518.56x = 10,422,406,365.84
5. Step 5: Solve for x
   x = 10,422,406,365.84/116,518.56
6. Step 6: Final answer
   x = 89,448.47