Finding the Fourth Proportional to 100,808.22, 139,091.61 and 84,736.62

Step by Step Solution

1. Step 1: Write the proportion equation
   100,808.22 : 139,091.61 = 84,736.62 : x
2. Step 2: Convert to fraction form
   100,808.22/139,091.61 = 84,736.62/x
3. Step 3: Cross multiply
   100,808.22x = 139,091.61 × 84,736.62
4. Step 4: Simplify right side
   100,808.22x = 11,786,152,901.76
5. Step 5: Solve for x
   x = 11,786,152,901.76/100,808.22
6. Step 6: Final answer
   x = 116,916.59