Finding the Fourth Proportional to 76,411.61, 105,464.52 and 58,309.37

Step by Step Solution

1. Step 1: Write the proportion equation
   76,411.61 : 105,464.52 = 58,309.37 : x
2. Step 2: Convert to fraction form
   76,411.61/105,464.52 = 58,309.37/x
3. Step 3: Cross multiply
   76,411.61x = 105,464.52 × 58,309.37
4. Step 4: Simplify right side
   76,411.61x = 6,149,569,191.23
5. Step 5: Solve for x
   x = 6,149,569,191.23/76,411.61
6. Step 6: Final answer
   x = 80,479.52