Finding the Fourth Proportional to 284,131.45, 392,089.03 and 155,066.59

Step by Step Solution

1. Step 1: Write the proportion equation
   284,131.45 : 392,089.03 = 155,066.59 : x
2. Step 2: Convert to fraction form
   284,131.45/392,089.03 = 155,066.59/x
3. Step 3: Cross multiply
   284,131.45x = 392,089.03 × 155,066.59
4. Step 4: Simplify right side
   284,131.45x = 60,799,908,858.51
5. Step 5: Solve for x
   x = 60,799,908,858.51/284,131.45
6. Step 6: Final answer
   x = 213,985.14