Finding the Fourth Proportional to 140,445.53, 193,814.82 and 76,783.31

Step by Step Solution

1. Step 1: Write the proportion equation
   140,445.53 : 193,814.82 = 76,783.31 : x
2. Step 2: Convert to fraction form
   140,445.53/193,814.82 = 76,783.31/x
3. Step 3: Cross multiply
   140,445.53x = 193,814.82 × 76,783.31
4. Step 4: Simplify right side
   140,445.53x = 14,881,743,406.65
5. Step 5: Solve for x
   x = 14,881,743,406.65/140,445.53
6. Step 6: Final answer
   x = 105,960.96