Finding the Fourth Proportional to 316,061.34, 436,128.93 and 187,003.77

Step by Step Solution

1. Step 1: Write the proportion equation
   316,061.34 : 436,128.93 = 187,003.77 : x
2. Step 2: Convert to fraction form
   316,061.34/436,128.93 = 187,003.77/x
3. Step 3: Cross multiply
   316,061.34x = 436,128.93 × 187,003.77
4. Step 4: Simplify right side
   316,061.34x = 81,557,754,116.07
5. Step 5: Solve for x
   x = 81,557,754,116.07/316,061.34
6. Step 6: Final answer
   x = 258,044.07