Finding the Fourth Proportional to 123,357.21, 185,055.12 and 52,279.98

Step by Step Solution

1. Step 1: Write the proportion equation
   123,357.21 : 185,055.12 = 52,279.98 : x
2. Step 2: Convert to fraction form
   123,357.21/185,055.12 = 52,279.98/x
3. Step 3: Cross multiply
   123,357.21x = 185,055.12 × 52,279.98
4. Step 4: Simplify right side
   123,357.21x = 9,674,677,972.50
5. Step 5: Solve for x
   x = 9,674,677,972.50/123,357.21
6. Step 6: Final answer
   x = 78,428.15