Finding the Fourth Proportional to 103,742.10, 155,613.15 and 64,376.10

Step by Step Solution

1. Step 1: Write the proportion equation
   103,742.10 : 155,613.15 = 64,376.10 : x
2. Step 2: Convert to fraction form
   103,742.10/155,613.15 = 64,376.10/x
3. Step 3: Cross multiply
   103,742.10x = 155,613.15 × 64,376.10
4. Step 4: Simplify right side
   103,742.10x = 10,017,767,705.72
5. Step 5: Solve for x
   x = 10,017,767,705.72/103,742.10
6. Step 6: Final answer
   x = 96,564.15