Finding the Fourth Proportional to 90,100.32, 135,035.44 and 42,715.32

Step by Step Solution

1. Step 1: Write the proportion equation
   90,100.32 : 135,035.44 = 42,715.32 : x
2. Step 2: Convert to fraction form
   90,100.32/135,035.44 = 42,715.32/x
3. Step 3: Cross multiply
   90,100.32x = 135,035.44 × 42,715.32
4. Step 4: Simplify right side
   90,100.32x = 5,768,082,030.94
5. Step 5: Solve for x
   x = 5,768,082,030.94/90,100.32
6. Step 6: Final answer
   x = 64,018.44