Finding the Fourth Proportional to 78,101.34, 107,779.69 and 42,291.24

Step by Step Solution

1. Step 1: Write the proportion equation
   78,101.34 : 107,779.69 = 42,291.24 : x
2. Step 2: Convert to fraction form
   78,101.34/107,779.69 = 42,291.24/x
3. Step 3: Cross multiply
   78,101.34x = 107,779.69 × 42,291.24
4. Step 4: Simplify right side
   78,101.34x = 4,558,136,736.92
5. Step 5: Solve for x
   x = 4,558,136,736.92/78,101.34
6. Step 6: Final answer
   x = 58,361.82