Finding the Fourth Proportional to 86,385.96, 129,616.38 and 42,051.24

Step by Step Solution

1. Step 1: Write the proportion equation
   86,385.96 : 129,616.38 = 42,051.24 : x
2. Step 2: Convert to fraction form
   86,385.96/129,616.38 = 42,051.24/x
3. Step 3: Cross multiply
   86,385.96x = 129,616.38 × 42,051.24
4. Step 4: Simplify right side
   86,385.96x = 5,450,529,503.31
5. Step 5: Solve for x
   x = 5,450,529,503.31/86,385.96
6. Step 6: Final answer
   x = 63,095.09