Finding the Fourth Proportional to 93,293.69, 139,948.92 and 30,115.31

Step by Step Solution

1. Step 1: Write the proportion equation
   93,293.69 : 139,948.92 = 30,115.31 : x
2. Step 2: Convert to fraction form
   93,293.69/139,948.92 = 30,115.31/x
3. Step 3: Cross multiply
   93,293.69x = 139,948.92 × 30,115.31
4. Step 4: Simplify right side
   93,293.69x = 4,214,604,410.22
5. Step 5: Solve for x
   x = 4,214,604,410.22/93,293.69
6. Step 6: Final answer
   x = 45,175.67