Finding the Fourth Proportional to 307,056.31, 423,731.32 and 171,089.71

Step by Step Solution

1. Step 1: Write the proportion equation
   307,056.31 : 423,731.32 = 171,089.71 : x
2. Step 2: Convert to fraction form
   307,056.31/423,731.32 = 171,089.71/x
3. Step 3: Cross multiply
   307,056.31x = 423,731.32 × 171,089.71
4. Step 4: Simplify right side
   307,056.31x = 72,496,068,656.72
5. Step 5: Solve for x
   x = 72,496,068,656.72/307,056.31
6. Step 6: Final answer
   x = 236,100.24