Finding the Fourth Proportional to 103,704.72, 143,069.94 and 76,913.16

Step by Step Solution

1. Step 1: Write the proportion equation
   103,704.72 : 143,069.94 = 76,913.16 : x
2. Step 2: Convert to fraction form
   103,704.72/143,069.94 = 76,913.16/x
3. Step 3: Cross multiply
   103,704.72x = 143,069.94 × 76,913.16
4. Step 4: Simplify right side
   103,704.72x = 11,003,961,186.41
5. Step 5: Solve for x
   x = 11,003,961,186.41/103,704.72
6. Step 6: Final answer
   x = 106,108.59