Finding the Fourth Proportional to 106,069.74, 146,376.72 and 57,672.15

Step by Step Solution

1. Step 1: Write the proportion equation
   106,069.74 : 146,376.72 = 57,672.15 : x
2. Step 2: Convert to fraction form
   106,069.74/146,376.72 = 57,672.15/x
3. Step 3: Cross multiply
   106,069.74x = 146,376.72 × 57,672.15
4. Step 4: Simplify right side
   106,069.74x = 8,441,860,152.35
5. Step 5: Solve for x
   x = 8,441,860,152.35/106,069.74
6. Step 6: Final answer
   x = 79,587.83