Finding the Fourth Proportional to 152,415.52, 210,333.12 and 85,347.52

Step by Step Solution

1. Step 1: Write the proportion equation
   152,415.52 : 210,333.12 = 85,347.52 : x
2. Step 2: Convert to fraction form
   152,415.52/210,333.12 = 85,347.52/x
3. Step 3: Cross multiply
   152,415.52x = 210,333.12 × 85,347.52
4. Step 4: Simplify right side
   152,415.52x = 17,951,410,165.86
5. Step 5: Solve for x
   x = 17,951,410,165.86/152,415.52
6. Step 6: Final answer
   x = 117,779.41