Finding the Fourth Proportional to 78,345.14, 108,116.51 and 42,535.31

Step by Step Solution

1. Step 1: Write the proportion equation
   78,345.14 : 108,116.51 = 42,535.31 : x
2. Step 2: Convert to fraction form
   78,345.14/108,116.51 = 42,535.31/x
3. Step 3: Cross multiply
   78,345.14x = 108,116.51 × 42,535.31
4. Step 4: Simplify right side
   78,345.14x = 4,598,768,515.71
5. Step 5: Solve for x
   x = 4,598,768,515.71/78,345.14
6. Step 6: Final answer
   x = 58,698.84