Finding the Fourth Proportional to 76,526.78, 105,602.43 and 42,534.09

Step by Step Solution

1. Step 1: Write the proportion equation
   76,526.78 : 105,602.43 = 42,534.09 : x
2. Step 2: Convert to fraction form
   76,526.78/105,602.43 = 42,534.09/x
3. Step 3: Cross multiply
   76,526.78x = 105,602.43 × 42,534.09
4. Step 4: Simplify right side
   76,526.78x = 4,491,703,523.44
5. Step 5: Solve for x
   x = 4,491,703,523.44/76,526.78
6. Step 6: Final answer
   x = 58,694.54