Finding the Fourth Proportional to 155,339.34, 215,179.98 and 152,190.06

Step by Step Solution

1. Step 1: Write the proportion equation
   155,339.34 : 215,179.98 = 152,190.06 : x
2. Step 2: Convert to fraction form
   155,339.34/215,179.98 = 152,190.06/x
3. Step 3: Cross multiply
   155,339.34x = 215,179.98 × 152,190.06
4. Step 4: Simplify right side
   155,339.34x = 32,748,254,067.00
5. Step 5: Solve for x
   x = 32,748,254,067.00/155,339.34
6. Step 6: Final answer
   x = 210,817.52