Finding the Fourth Proportional to 89,533.85, 134,338.75 and 42,147.90

Step by Step Solution

1. Step 1: Write the proportion equation
   89,533.85 : 134,338.75 = 42,147.90 : x
2. Step 2: Convert to fraction form
   89,533.85/134,338.75 = 42,147.90/x
3. Step 3: Cross multiply
   89,533.85x = 134,338.75 × 42,147.90
4. Step 4: Simplify right side
   89,533.85x = 5,662,096,095.76
5. Step 5: Solve for x
   x = 5,662,096,095.76/89,533.85
6. Step 6: Final answer
   x = 63,239.73