Finding the Fourth Proportional to 78,091.92, 117,186.06 and 30,698.70

Step by Step Solution

1. Step 1: Write the proportion equation
   78,091.92 : 117,186.06 = 30,698.70 : x
2. Step 2: Convert to fraction form
   78,091.92/117,186.06 = 30,698.70/x
3. Step 3: Cross multiply
   78,091.92x = 117,186.06 × 30,698.70
4. Step 4: Simplify right side
   78,091.92x = 3,597,459,700.12
5. Step 5: Solve for x
   x = 3,597,459,700.12/78,091.92
6. Step 6: Final answer
   x = 46,066.99