Finding the Fourth Proportional to 152,213, 210,053.94 and 85,145

Step by Step Solution

1. Step 1: Write the proportion equation
   152,213 : 210,053.94 = 85,145 : x
2. Step 2: Convert to fraction form
   152,213/210,053.94 = 85,145/x
3. Step 3: Cross multiply
   152,213x = 210,053.94 × 85,145
4. Step 4: Simplify right side
   152,213x = 17,885,042,721.30
5. Step 5: Solve for x
   x = 17,885,042,721.30/152,213
6. Step 6: Final answer
   x = 117,500.10