Finding the Fourth Proportional to 78,357.16, 108,133.31 and 42,547.17

Step by Step Solution

1. Step 1: Write the proportion equation
   78,357.16 : 108,133.31 = 42,547.17 : x
2. Step 2: Convert to fraction form
   78,357.16/108,133.31 = 42,547.17/x
3. Step 3: Cross multiply
   78,357.16x = 108,133.31 × 42,547.17
4. Step 4: Simplify right side
   78,357.16x = 4,600,766,323.23
5. Step 5: Solve for x
   x = 4,600,766,323.23/78,357.16
6. Step 6: Final answer
   x = 58,715.33