Finding the Fourth Proportional to 78,633.63, 108,510.93 and 42,821.49

Step by Step Solution

1. Step 1: Write the proportion equation
   78,633.63 : 108,510.93 = 42,821.49 : x
2. Step 2: Convert to fraction form
   78,633.63/108,510.93 = 42,821.49/x
3. Step 3: Cross multiply
   78,633.63x = 108,510.93 × 42,821.49
4. Step 4: Simplify right side
   78,633.63x = 4,646,599,703.89
5. Step 5: Solve for x
   x = 4,646,599,703.89/78,633.63
6. Step 6: Final answer
   x = 59,091.76