Finding the Fourth Proportional to 88,994.24, 133,506.12 and 42,221.60

Step by Step Solution

1. Step 1: Write the proportion equation
   88,994.24 : 133,506.12 = 42,221.60 : x
2. Step 2: Convert to fraction form
   88,994.24/133,506.12 = 42,221.60/x
3. Step 3: Cross multiply
   88,994.24x = 133,506.12 × 42,221.60
4. Step 4: Simplify right side
   88,994.24x = 5,636,841,996.19
5. Step 5: Solve for x
   x = 5,636,841,996.19/88,994.24
6. Step 6: Final answer
   x = 63,339.40