Finding the Fourth Proportional to 78,591.94, 108,458.01 and 42,783.07

Step by Step Solution

1. Step 1: Write the proportion equation
   78,591.94 : 108,458.01 = 42,783.07 : x
2. Step 2: Convert to fraction form
   78,591.94/108,458.01 = 42,783.07/x
3. Step 3: Cross multiply
   78,591.94x = 108,458.01 × 42,783.07
4. Step 4: Simplify right side
   78,591.94x = 4,640,166,633.89
5. Step 5: Solve for x
   x = 4,640,166,633.89/78,591.94
6. Step 6: Final answer
   x = 59,041.25