Finding the Fourth Proportional to 142,888.42, 214,317.45 and 58,657.42

Step by Step Solution

1. Step 1: Write the proportion equation
   142,888.42 : 214,317.45 = 58,657.42 : x
2. Step 2: Convert to fraction form
   142,888.42/214,317.45 = 58,657.42/x
3. Step 3: Cross multiply
   142,888.42x = 214,317.45 × 58,657.42
4. Step 4: Simplify right side
   142,888.42x = 12,571,308,677.98
5. Step 5: Solve for x
   x = 12,571,308,677.98/142,888.42
6. Step 6: Final answer
   x = 87,979.90