Finding the Fourth Proportional to 90,297.12, 134,896.55 and 58,447.72

Step by Step Solution

1. Step 1: Write the proportion equation
   90,297.12 : 134,896.55 = 58,447.72 : x
2. Step 2: Convert to fraction form
   90,297.12/134,896.55 = 58,447.72/x
3. Step 3: Cross multiply
   90,297.12x = 134,896.55 × 58,447.72
4. Step 4: Simplify right side
   90,297.12x = 7,884,395,783.37
5. Step 5: Solve for x
   x = 7,884,395,783.37/90,297.12
6. Step 6: Final answer
   x = 87,316.14