Finding the Fourth Proportional to 42,185.86, 63,278.80 and 38,665.98

Step by Step Solution

1. Step 1: Write the proportion equation
   42,185.86 : 63,278.80 = 38,665.98 : x
2. Step 2: Convert to fraction form
   42,185.86/63,278.80 = 38,665.98/x
3. Step 3: Cross multiply
   42,185.86x = 63,278.80 × 38,665.98
4. Step 4: Simplify right side
   42,185.86x = 2,446,736,815.22
5. Step 5: Solve for x
   x = 2,446,736,815.22/42,185.86
6. Step 6: Final answer
   x = 57,998.98