Finding the Fourth Proportional to 105,301, 145,314.18 and 57,554.20

Step by Step Solution

1. Step 1: Write the proportion equation
   105,301 : 145,314.18 = 57,554.20 : x
2. Step 2: Convert to fraction form
   105,301/145,314.18 = 57,554.20/x
3. Step 3: Cross multiply
   105,301x = 145,314.18 × 57,554.20
4. Step 4: Simplify right side
   105,301x = 8,363,441,378.56
5. Step 5: Solve for x
   x = 8,363,441,378.56/105,301
6. Step 6: Final answer
   x = 79,424.14