Finding the Fourth Proportional to 123,064.20, 169,818.30 and 72,070.02

Step by Step Solution

1. Step 1: Write the proportion equation
   123,064.20 : 169,818.30 = 72,070.02 : x
2. Step 2: Convert to fraction form
   123,064.20/169,818.30 = 72,070.02/x
3. Step 3: Cross multiply
   123,064.20x = 169,818.30 × 72,070.02
4. Step 4: Simplify right side
   123,064.20x = 12,238,808,277.37
5. Step 5: Solve for x
   x = 12,238,808,277.37/123,064.20
6. Step 6: Final answer
   x = 99,450.60