Finding the Fourth Proportional to 152,410.56, 210,326.24 and 85,342.56

Step by Step Solution

1. Step 1: Write the proportion equation
   152,410.56 : 210,326.24 = 85,342.56 : x
2. Step 2: Convert to fraction form
   152,410.56/210,326.24 = 85,342.56/x
3. Step 3: Cross multiply
   152,410.56x = 210,326.24 × 85,342.56
4. Step 4: Simplify right side
   152,410.56x = 17,949,779,756.77
5. Step 5: Solve for x
   x = 17,949,779,756.77/152,410.56
6. Step 6: Final answer
   x = 117,772.55