Finding the Fourth Proportional to 140,322, 193,648.62 and 76,663.89

Step by Step Solution

1. Step 1: Write the proportion equation
   140,322 : 193,648.62 = 76,663.89 : x
2. Step 2: Convert to fraction form
   140,322/193,648.62 = 76,663.89/x
3. Step 3: Cross multiply
   140,322x = 193,648.62 × 76,663.89
4. Step 4: Simplify right side
   140,322x = 14,845,856,502.33
5. Step 5: Solve for x
   x = 14,845,856,502.33/140,322
6. Step 6: Final answer
   x = 105,798.50