Finding the Fourth Proportional to 105,063, 144,989.52 and 57,320.88

Step by Step Solution

1. Step 1: Write the proportion equation
   105,063 : 144,989.52 = 57,320.88 : x
2. Step 2: Convert to fraction form
   105,063/144,989.52 = 57,320.88/x
3. Step 3: Cross multiply
   105,063x = 144,989.52 × 57,320.88
4. Step 4: Simplify right side
   105,063x = 8,310,926,877.18
5. Step 5: Solve for x
   x = 8,310,926,877.18/105,063
6. Step 6: Final answer
   x = 79,104.22