Finding the Fourth Proportional to 279,837.31, 386,164.24 and 152,510.17

Step by Step Solution

1. Step 1: Write the proportion equation
   279,837.31 : 386,164.24 = 152,510.17 : x
2. Step 2: Convert to fraction form
   279,837.31/386,164.24 = 152,510.17/x
3. Step 3: Cross multiply
   279,837.31x = 386,164.24 × 152,510.17
4. Step 4: Simplify right side
   279,837.31x = 58,893,973,890.32
5. Step 5: Solve for x
   x = 58,893,973,890.32/279,837.31
6. Step 6: Final answer
   x = 210,457.90