Finding the Fourth Proportional to 76,460.18, 105,511.46 and 42,470.86

Step by Step Solution

1. Step 1: Write the proportion equation
   76,460.18 : 105,511.46 = 42,470.86 : x
2. Step 2: Convert to fraction form
   76,460.18/105,511.46 = 42,470.86/x
3. Step 3: Cross multiply
   76,460.18x = 105,511.46 × 42,470.86
4. Step 4: Simplify right side
   76,460.18x = 4,481,162,446.06
5. Step 5: Solve for x
   x = 4,481,162,446.06/76,460.18
6. Step 6: Final answer
   x = 58,607.79