Finding the Fourth Proportional to 140,111.52, 193,343.72 and 76,448

Step by Step Solution

1. Step 1: Write the proportion equation
   140,111.52 : 193,343.72 = 76,448 : x
2. Step 2: Convert to fraction form
   140,111.52/193,343.72 = 76,448/x
3. Step 3: Cross multiply
   140,111.52x = 193,343.72 × 76,448
4. Step 4: Simplify right side
   140,111.52x = 14,780,740,706.56
5. Step 5: Solve for x
   x = 14,780,740,706.56/140,111.52
6. Step 6: Final answer
   x = 105,492.69