Finding the Fourth Proportional to 76,480.56, 105,484.68 and 67,032.72

Step by Step Solution

1. Step 1: Write the proportion equation
   76,480.56 : 105,484.68 = 67,032.72 : x
2. Step 2: Convert to fraction form
   76,480.56/105,484.68 = 67,032.72/x
3. Step 3: Cross multiply
   76,480.56x = 105,484.68 × 67,032.72
4. Step 4: Simplify right side
   76,480.56x = 7,070,925,018.73
5. Step 5: Solve for x
   x = 7,070,925,018.73/76,480.56
6. Step 6: Final answer
   x = 92,453.89