Finding the Fourth Proportional to 78,592.78, 108,458.06 and 42,783.07

Step by Step Solution

1. Step 1: Write the proportion equation
   78,592.78 : 108,458.06 = 42,783.07 : x
2. Step 2: Convert to fraction form
   78,592.78/108,458.06 = 42,783.07/x
3. Step 3: Cross multiply
   78,592.78x = 108,458.06 × 42,783.07
4. Step 4: Simplify right side
   78,592.78x = 4,640,168,773.04
5. Step 5: Solve for x
   x = 4,640,168,773.04/78,592.78
6. Step 6: Final answer
   x = 59,040.65