Finding the Fourth Proportional to 140,566.32, 193,986.18 and 76,904.15

Step by Step Solution

1. Step 1: Write the proportion equation
   140,566.32 : 193,986.18 = 76,904.15 : x
2. Step 2: Convert to fraction form
   140,566.32/193,986.18 = 76,904.15/x
3. Step 3: Cross multiply
   140,566.32x = 193,986.18 × 76,904.15
4. Step 4: Simplify right side
   140,566.32x = 14,918,341,314.72
5. Step 5: Solve for x
   x = 14,918,341,314.72/140,566.32
6. Step 6: Final answer
   x = 106,130.27