Finding the Fourth Proportional to 148,519.48, 222,456.52 and 91,419.34

Step by Step Solution

1. Step 1: Write the proportion equation
   148,519.48 : 222,456.52 = 91,419.34 : x
2. Step 2: Convert to fraction form
   148,519.48/222,456.52 = 91,419.34/x
3. Step 3: Cross multiply
   148,519.48x = 222,456.52 × 91,419.34
4. Step 4: Simplify right side
   148,519.48x = 20,336,828,008.55
5. Step 5: Solve for x
   x = 20,336,828,008.55/148,519.48
6. Step 6: Final answer
   x = 136,930.37