Finding the Fourth Proportional to 152,990.46, 211,123.62 and 85,003.47

Step by Step Solution

1. Step 1: Write the proportion equation
   152,990.46 : 211,123.62 = 85,003.47 : x
2. Step 2: Convert to fraction form
   152,990.46/211,123.62 = 85,003.47/x
3. Step 3: Cross multiply
   152,990.46x = 211,123.62 × 85,003.47
4. Step 4: Simplify right side
   152,990.46x = 17,946,240,298.96
5. Step 5: Solve for x
   x = 17,946,240,298.96/152,990.46
6. Step 6: Final answer
   x = 117,303.00