Finding the Fourth Proportional to 101,242.78, 139,716.52 and 58,801.32

Step by Step Solution

1. Step 1: Write the proportion equation
   101,242.78 : 139,716.52 = 58,801.32 : x
2. Step 2: Convert to fraction form
   101,242.78/139,716.52 = 58,801.32/x
3. Step 3: Cross multiply
   101,242.78x = 139,716.52 × 58,801.32
4. Step 4: Simplify right side
   101,242.78x = 8,215,515,801.81
5. Step 5: Solve for x
   x = 8,215,515,801.81/101,242.78
6. Step 6: Final answer
   x = 81,146.68