Finding the Fourth Proportional to 156,744.56, 216,303.93 and 85,123.04

Step by Step Solution

1. Step 1: Write the proportion equation
   156,744.56 : 216,303.93 = 85,123.04 : x
2. Step 2: Convert to fraction form
   156,744.56/216,303.93 = 85,123.04/x
3. Step 3: Cross multiply
   156,744.56x = 216,303.93 × 85,123.04
4. Step 4: Simplify right side
   156,744.56x = 18,412,448,085.55
5. Step 5: Solve for x
   x = 18,412,448,085.55/156,744.56
6. Step 6: Final answer
   x = 117,467.86