Finding the Fourth Proportional to 78,588.02, 108,452.85 and 42,779.06

Step by Step Solution

1. Step 1: Write the proportion equation
   78,588.02 : 108,452.85 = 42,779.06 : x
2. Step 2: Convert to fraction form
   78,588.02/108,452.85 = 42,779.06/x
3. Step 3: Cross multiply
   78,588.02x = 108,452.85 × 42,779.06
4. Step 4: Simplify right side
   78,588.02x = 4,639,510,977.32
5. Step 5: Solve for x
   x = 4,639,510,977.32/78,588.02
6. Step 6: Final answer
   x = 59,035.86