Finding the Fourth Proportional to 101,321.52, 139,830.12 and 58,315.56

Step by Step Solution

1. Step 1: Write the proportion equation
   101,321.52 : 139,830.12 = 58,315.56 : x
2. Step 2: Convert to fraction form
   101,321.52/139,830.12 = 58,315.56/x
3. Step 3: Cross multiply
   101,321.52x = 139,830.12 × 58,315.56
4. Step 4: Simplify right side
   101,321.52x = 8,154,271,752.67
5. Step 5: Solve for x
   x = 8,154,271,752.67/101,321.52
6. Step 6: Final answer
   x = 80,479.17