Finding the Fourth Proportional to 78,642.99, 108,526.77 and 42,832.89

Step by Step Solution

1. Step 1: Write the proportion equation
   78,642.99 : 108,526.77 = 42,832.89 : x
2. Step 2: Convert to fraction form
   78,642.99/108,526.77 = 42,832.89/x
3. Step 3: Cross multiply
   78,642.99x = 108,526.77 × 42,832.89
4. Step 4: Simplify right side
   78,642.99x = 4,648,515,201.47
5. Step 5: Solve for x
   x = 4,648,515,201.47/78,642.99
6. Step 6: Final answer
   x = 59,109.09