Finding the Fourth Proportional to 137,390.17, 206,097.86 and 42,621.08

Step by Step Solution

1. Step 1: Write the proportion equation
   137,390.17 : 206,097.86 = 42,621.08 : x
2. Step 2: Convert to fraction form
   137,390.17/206,097.86 = 42,621.08/x
3. Step 3: Cross multiply
   137,390.17x = 206,097.86 × 42,621.08
4. Step 4: Simplify right side
   137,390.17x = 8,784,113,378.89
5. Step 5: Solve for x
   x = 8,784,113,378.89/137,390.17
6. Step 6: Final answer
   x = 63,935.53