Finding the Fourth Proportional to 601,371, 902,109.78 and 158,139

Step by Step Solution

1. Step 1: Write the proportion equation
   601,371 : 902,109.78 = 158,139 : x
2. Step 2: Convert to fraction form
   601,371/902,109.78 = 158,139/x
3. Step 3: Cross multiply
   601,371x = 902,109.78 × 158,139
4. Step 4: Simplify right side
   601,371x = 142,658,738,499.42
5. Step 5: Solve for x
   x = 142,658,738,499.42/601,371
6. Step 6: Final answer
   x = 237,222.51