Finding the Fourth Proportional to 156,667.86, 216,206.28 and 85,052.52

Step by Step Solution

1. Step 1: Write the proportion equation
   156,667.86 : 216,206.28 = 85,052.52 : x
2. Step 2: Convert to fraction form
   156,667.86/216,206.28 = 85,052.52/x
3. Step 3: Cross multiply
   156,667.86x = 216,206.28 × 85,052.52
4. Step 4: Simplify right side
   156,667.86x = 18,388,888,953.83
5. Step 5: Solve for x
   x = 18,388,888,953.83/156,667.86
6. Step 6: Final answer
   x = 117,374.99