Finding the Fourth Proportional to 76,585.37, 105,687.79 and 42,592.91

Step by Step Solution

1. Step 1: Write the proportion equation
   76,585.37 : 105,687.79 = 42,592.91 : x
2. Step 2: Convert to fraction form
   76,585.37/105,687.79 = 42,592.91/x
3. Step 3: Cross multiply
   76,585.37x = 105,687.79 × 42,592.91
4. Step 4: Simplify right side
   76,585.37x = 4,501,549,892.65
5. Step 5: Solve for x
   x = 4,501,549,892.65/76,585.37
6. Step 6: Final answer
   x = 58,778.20