Finding the Fourth Proportional to 116,820.83, 161,212.61 and 63,105.84

Step by Step Solution

1. Step 1: Write the proportion equation
   116,820.83 : 161,212.61 = 63,105.84 : x
2. Step 2: Convert to fraction form
   116,820.83/161,212.61 = 63,105.84/x
3. Step 3: Cross multiply
   116,820.83x = 161,212.61 × 63,105.84
4. Step 4: Simplify right side
   116,820.83x = 10,173,457,330.41
5. Step 5: Solve for x
   x = 10,173,457,330.41/116,820.83
6. Step 6: Final answer
   x = 87,085.99