Finding the Fourth Proportional to 76,588.53, 105,684.10 and 42,591.51

Step by Step Solution

1. Step 1: Write the proportion equation
   76,588.53 : 105,684.10 = 42,591.51 : x
2. Step 2: Convert to fraction form
   76,588.53/105,684.10 = 42,591.51/x
3. Step 3: Cross multiply
   76,588.53x = 105,684.10 × 42,591.51
4. Step 4: Simplify right side
   76,588.53x = 4,501,245,401.99
5. Step 5: Solve for x
   x = 4,501,245,401.99/76,588.53
6. Step 6: Final answer
   x = 58,771.80