Finding the Fourth Proportional to 78,318.01, 108,075.96 and 42,507.25

Step by Step Solution

1. Step 1: Write the proportion equation
   78,318.01 : 108,075.96 = 42,507.25 : x
2. Step 2: Convert to fraction form
   78,318.01/108,075.96 = 42,507.25/x
3. Step 3: Cross multiply
   78,318.01x = 108,075.96 × 42,507.25
4. Step 4: Simplify right side
   78,318.01x = 4,594,012,188.45
5. Step 5: Solve for x
   x = 4,594,012,188.45/78,318.01
6. Step 6: Final answer
   x = 58,658.44