Finding the Fourth Proportional to 78,624.63, 117,907.79 and 42,593.94

Step by Step Solution

1. Step 1: Write the proportion equation
   78,624.63 : 117,907.79 = 42,593.94 : x
2. Step 2: Convert to fraction form
   78,624.63/117,907.79 = 42,593.94/x
3. Step 3: Cross multiply
   78,624.63x = 117,907.79 × 42,593.94
4. Step 4: Simplify right side
   78,624.63x = 5,022,157,119.82
5. Step 5: Solve for x
   x = 5,022,157,119.82/78,624.63
6. Step 6: Final answer
   x = 63,875.11