Finding the Fourth Proportional to 76,484.56, 105,490.20 and 67,036.72

Step by Step Solution

1. Step 1: Write the proportion equation
   76,484.56 : 105,490.20 = 67,036.72 : x
2. Step 2: Convert to fraction form
   76,484.56/105,490.20 = 67,036.72/x
3. Step 3: Cross multiply
   76,484.56x = 105,490.20 × 67,036.72
4. Step 4: Simplify right side
   76,484.56x = 7,071,717,000.14
5. Step 5: Solve for x
   x = 7,071,717,000.14/76,484.56
6. Step 6: Final answer
   x = 92,459.41