Finding the Fourth Proportional to 140,404.05, 193,758.08 and 76,742.91

Step by Step Solution

1. Step 1: Write the proportion equation
   140,404.05 : 193,758.08 = 76,742.91 : x
2. Step 2: Convert to fraction form
   140,404.05/193,758.08 = 76,742.91/x
3. Step 3: Cross multiply
   140,404.05x = 193,758.08 × 76,742.91
4. Step 4: Simplify right side
   140,404.05x = 14,869,558,511.50
5. Step 5: Solve for x
   x = 14,869,558,511.50/140,404.05
6. Step 6: Final answer
   x = 105,905.48