Finding the Fourth Proportional to 137,085.77, 205,552.27 and 42,289.05

Step by Step Solution

1. Step 1: Write the proportion equation
   137,085.77 : 205,552.27 = 42,289.05 : x
2. Step 2: Convert to fraction form
   137,085.77/205,552.27 = 42,289.05/x
3. Step 3: Cross multiply
   137,085.77x = 205,552.27 × 42,289.05
4. Step 4: Simplify right side
   137,085.77x = 8,692,610,809.45
5. Step 5: Solve for x
   x = 8,692,610,809.45/137,085.77
6. Step 6: Final answer
   x = 63,410.02