Finding the Fourth Proportional to 113,820.32, 170,749.01 and 42,748.49

Step by Step Solution

1. Step 1: Write the proportion equation
   113,820.32 : 170,749.01 = 42,748.49 : x
2. Step 2: Convert to fraction form
   113,820.32/170,749.01 = 42,748.49/x
3. Step 3: Cross multiply
   113,820.32x = 170,749.01 × 42,748.49
4. Step 4: Simplify right side
   113,820.32x = 7,299,262,880.24
5. Step 5: Solve for x
   x = 7,299,262,880.24/113,820.32
6. Step 6: Final answer
   x = 64,129.70