Finding the Fourth Proportional to 42,861.35, 64,302.29 and 17,887.51

Step by Step Solution

1. Step 1: Write the proportion equation
   42,861.35 : 64,302.29 = 17,887.51 : x
2. Step 2: Convert to fraction form
   42,861.35/64,302.29 = 17,887.51/x
3. Step 3: Cross multiply
   42,861.35x = 64,302.29 × 17,887.51
4. Step 4: Simplify right side
   42,861.35x = 1,150,207,855.40
5. Step 5: Solve for x
   x = 1,150,207,855.40/42,861.35
6. Step 6: Final answer
   x = 26,835.55