Finding the Fourth Proportional to 141,835.31, 212,789.42 and 53,090.09

Step by Step Solution

1. Step 1: Write the proportion equation
   141,835.31 : 212,789.42 = 53,090.09 : x
2. Step 2: Convert to fraction form
   141,835.31/212,789.42 = 53,090.09/x
3. Step 3: Cross multiply
   141,835.31x = 212,789.42 × 53,090.09
4. Step 4: Simplify right side
   141,835.31x = 11,297,009,458.85
5. Step 5: Solve for x
   x = 11,297,009,458.85/141,835.31
6. Step 6: Final answer
   x = 79,648.78