Finding the Fourth Proportional to 78,962.55, 118,410.12 and 45,705.57

Step by Step Solution

1. Step 1: Write the proportion equation
   78,962.55 : 118,410.12 = 45,705.57 : x
2. Step 2: Convert to fraction form
   78,962.55/118,410.12 = 45,705.57/x
3. Step 3: Cross multiply
   78,962.55x = 118,410.12 × 45,705.57
4. Step 4: Simplify right side
   78,962.55x = 5,412,002,390.60
5. Step 5: Solve for x
   x = 5,412,002,390.60/78,962.55
6. Step 6: Final answer
   x = 68,538.85