Finding the Fourth Proportional to 120,499.02, 166,364.27 and 77,553.14

Step by Step Solution

1. Step 1: Write the proportion equation
   120,499.02 : 166,364.27 = 77,553.14 : x
2. Step 2: Convert to fraction form
   120,499.02/166,364.27 = 77,553.14/x
3. Step 3: Cross multiply
   120,499.02x = 166,364.27 × 77,553.14
4. Step 4: Simplify right side
   120,499.02x = 12,902,070,302.72
5. Step 5: Solve for x
   x = 12,902,070,302.72/120,499.02
6. Step 6: Final answer
   x = 107,071.99