Finding the Fourth Proportional to 78,416.10, 108,214.89 and 42,606.18

Step by Step Solution

1. Step 1: Write the proportion equation
   78,416.10 : 108,214.89 = 42,606.18 : x
2. Step 2: Convert to fraction form
   78,416.10/108,214.89 = 42,606.18/x
3. Step 3: Cross multiply
   78,416.10x = 108,214.89 × 42,606.18
4. Step 4: Simplify right side
   78,416.10x = 4,610,623,082.02
5. Step 5: Solve for x
   x = 4,610,623,082.02/78,416.10
6. Step 6: Final answer
   x = 58,796.89