Finding the Fourth Proportional to 78,782.67, 108,720.42 and 42,973.45

Step by Step Solution

1. Step 1: Write the proportion equation
   78,782.67 : 108,720.42 = 42,973.45 : x
2. Step 2: Convert to fraction form
   78,782.67/108,720.42 = 42,973.45/x
3. Step 3: Cross multiply
   78,782.67x = 108,720.42 × 42,973.45
4. Step 4: Simplify right side
   78,782.67x = 4,672,091,532.85
5. Step 5: Solve for x
   x = 4,672,091,532.85/78,782.67
6. Step 6: Final answer
   x = 59,303.54