Finding the Fourth Proportional to 78,108.21, 107,788.73 and 42,298.11

Step by Step Solution

1. Step 1: Write the proportion equation
   78,108.21 : 107,788.73 = 42,298.11 : x
2. Step 2: Convert to fraction form
   78,108.21/107,788.73 = 42,298.11/x
3. Step 3: Cross multiply
   78,108.21x = 107,788.73 × 42,298.11
4. Step 4: Simplify right side
   78,108.21x = 4,559,259,346.81
5. Step 5: Solve for x
   x = 4,559,259,346.81/78,108.21
6. Step 6: Final answer
   x = 58,371.06