Finding the Fourth Proportional to 142,105.61, 212,973.30 and 57,767.25

Step by Step Solution

1. Step 1: Write the proportion equation
   142,105.61 : 212,973.30 = 57,767.25 : x
2. Step 2: Convert to fraction form
   142,105.61/212,973.30 = 57,767.25/x
3. Step 3: Cross multiply
   142,105.61x = 212,973.30 × 57,767.25
4. Step 4: Simplify right side
   142,105.61x = 12,302,882,518.66
5. Step 5: Solve for x
   x = 12,302,882,518.66/142,105.61
6. Step 6: Final answer
   x = 86,575.63