Finding the Fourth Proportional to 116,820, 161,211.48 and 63,105.00

Step by Step Solution

1. Step 1: Write the proportion equation
   116,820 : 161,211.48 = 63,105.00 : x
2. Step 2: Convert to fraction form
   116,820/161,211.48 = 63,105.00/x
3. Step 3: Cross multiply
   116,820x = 161,211.48 × 63,105.00
4. Step 4: Simplify right side
   116,820x = 10,173,249,604.21
5. Step 5: Solve for x
   x = 10,173,249,604.21/116,820
6. Step 6: Final answer
   x = 87,084.83