Finding the Fourth Proportional to 279,820.16, 386,152.34 and 152,495.72

Step by Step Solution

1. Step 1: Write the proportion equation
   279,820.16 : 386,152.34 = 152,495.72 : x
2. Step 2: Convert to fraction form
   279,820.16/386,152.34 = 152,495.72/x
3. Step 3: Cross multiply
   279,820.16x = 386,152.34 × 152,495.72
4. Step 4: Simplify right side
   279,820.16x = 58,886,579,117.98
5. Step 5: Solve for x
   x = 58,886,579,117.98/279,820.16
6. Step 6: Final answer
   x = 210,444.38