Finding the Fourth Proportional to 116,815.72, 161,205.76 and 63,100.74

Step by Step Solution

1. Step 1: Write the proportion equation
   116,815.72 : 161,205.76 = 63,100.74 : x
2. Step 2: Convert to fraction form
   116,815.72/161,205.76 = 63,100.74/x
3. Step 3: Cross multiply
   116,815.72x = 161,205.76 × 63,100.74
4. Step 4: Simplify right side
   116,815.72x = 10,172,202,748.26
5. Step 5: Solve for x
   x = 10,172,202,748.26/116,815.72
6. Step 6: Final answer
   x = 87,079.06