Finding the Fourth Proportional to 142,484.94, 213,800.31 and 58,307.31

Step by Step Solution

1. Step 1: Write the proportion equation
   142,484.94 : 213,800.31 = 58,307.31 : x
2. Step 2: Convert to fraction form
   142,484.94/213,800.31 = 58,307.31/x
3. Step 3: Cross multiply
   142,484.94x = 213,800.31 × 58,307.31
4. Step 4: Simplify right side
   142,484.94x = 12,466,120,953.27
5. Step 5: Solve for x
   x = 12,466,120,953.27/142,484.94
6. Step 6: Final answer
   x = 87,490.80