Finding the Fourth Proportional to 64,900.84, 89,598.82 and 42,259.56

Step by Step Solution

1. Step 1: Write the proportion equation
   64,900.84 : 89,598.82 = 42,259.56 : x
2. Step 2: Convert to fraction form
   64,900.84/89,598.82 = 42,259.56/x
3. Step 3: Cross multiply
   64,900.84x = 89,598.82 × 42,259.56
4. Step 4: Simplify right side
   64,900.84x = 3,786,406,709.72
5. Step 5: Solve for x
   x = 3,786,406,709.72/64,900.84
6. Step 6: Final answer
   x = 58,341.41