Finding the Fourth Proportional to 78,789, 118,051.92 and 55,373.52

Step by Step Solution

1. Step 1: Write the proportion equation
   78,789 : 118,051.92 = 55,373.52 : x
2. Step 2: Convert to fraction form
   78,789/118,051.92 = 55,373.52/x
3. Step 3: Cross multiply
   78,789x = 118,051.92 × 55,373.52
4. Step 4: Simplify right side
   78,789x = 6,536,950,353.16
5. Step 5: Solve for x
   x = 6,536,950,353.16/78,789
6. Step 6: Final answer
   x = 82,967.80