Finding the Fourth Proportional to 116.17, 159.83 and 100.58

Step by Step Solution

1. Step 1: Write the proportion equation
   116.17 : 159.83 = 100.58 : x
2. Step 2: Convert to fraction form
   116.17/159.83 = 100.58/x
3. Step 3: Cross multiply
   116.17x = 159.83 × 100.58
4. Step 4: Simplify right side
   116.17x = 16,075.70
5. Step 5: Solve for x
   x = 16,075.70/116.17
6. Step 6: Final answer
   x = 138.38