Finding the Fourth Proportional to 69,300.06, 103,900.16 and 42,590.86

Step by Step Solution

1. Step 1: Write the proportion equation
   69,300.06 : 103,900.16 = 42,590.86 : x
2. Step 2: Convert to fraction form
   69,300.06/103,900.16 = 42,590.86/x
3. Step 3: Cross multiply
   69,300.06x = 103,900.16 × 42,590.86
4. Step 4: Simplify right side
   69,300.06x = 4,425,197,168.54
5. Step 5: Solve for x
   x = 4,425,197,168.54/69,300.06
6. Step 6: Final answer
   x = 63,855.60