Finding the Fourth Proportional to 78,078.65, 116,981.89 and 46,845.05

Step by Step Solution

1. Step 1: Write the proportion equation
   78,078.65 : 116,981.89 = 46,845.05 : x
2. Step 2: Convert to fraction form
   78,078.65/116,981.89 = 46,845.05/x
3. Step 3: Cross multiply
   78,078.65x = 116,981.89 × 46,845.05
4. Step 4: Simplify right side
   78,078.65x = 5,480,021,784.12
5. Step 5: Solve for x
   x = 5,480,021,784.12/78,078.65
6. Step 6: Final answer
   x = 70,185.92