Finding the Fourth Proportional to 140,081.76, 193,313.52 and 76,419.59

Step by Step Solution

1. Step 1: Write the proportion equation
   140,081.76 : 193,313.52 = 76,419.59 : x
2. Step 2: Convert to fraction form
   140,081.76/193,313.52 = 76,419.59/x
3. Step 3: Cross multiply
   140,081.76x = 193,313.52 × 76,419.59
4. Step 4: Simplify right side
   140,081.76x = 14,772,938,973.29
5. Step 5: Solve for x
   x = 14,772,938,973.29/140,081.76
6. Step 6: Final answer
   x = 105,459.40