Finding the Fourth Proportional to 93,228.72, 139,965.04 and 55,347.15

Step by Step Solution

1. Step 1: Write the proportion equation
   93,228.72 : 139,965.04 = 55,347.15 : x
2. Step 2: Convert to fraction form
   93,228.72/139,965.04 = 55,347.15/x
3. Step 3: Cross multiply
   93,228.72x = 139,965.04 × 55,347.15
4. Step 4: Simplify right side
   93,228.72x = 7,746,665,714.72
5. Step 5: Solve for x
   x = 7,746,665,714.72/93,228.72
6. Step 6: Final answer
   x = 83,093.12