Finding the Fourth Proportional to 72,776.34, 100,420.56 and 40,943.34

Step by Step Solution

1. Step 1: Write the proportion equation
   72,776.34 : 100,420.56 = 40,943.34 : x
2. Step 2: Convert to fraction form
   72,776.34/100,420.56 = 40,943.34/x
3. Step 3: Cross multiply
   72,776.34x = 100,420.56 × 40,943.34
4. Step 4: Simplify right side
   72,776.34x = 4,111,553,131.07
5. Step 5: Solve for x
   x = 4,111,553,131.07/72,776.34
6. Step 6: Final answer
   x = 56,495.74