Finding the Fourth Proportional to 101,647.34, 140,407.08 and 78,065.39

Step by Step Solution

1. Step 1: Write the proportion equation
   101,647.34 : 140,407.08 = 78,065.39 : x
2. Step 2: Convert to fraction form
   101,647.34/140,407.08 = 78,065.39/x
3. Step 3: Cross multiply
   101,647.34x = 140,407.08 × 78,065.39
4. Step 4: Simplify right side
   101,647.34x = 10,960,933,458.96
5. Step 5: Solve for x
   x = 10,960,933,458.96/101,647.34
6. Step 6: Final answer
   x = 107,832.96