Finding the Fourth Proportional to 152,982, 211,056 and 112,791.12

Step by Step Solution

1. Step 1: Write the proportion equation
   152,982 : 211,056 = 112,791.12 : x
2. Step 2: Convert to fraction form
   152,982/211,056 = 112,791.12/x
3. Step 3: Cross multiply
   152,982x = 211,056 × 112,791.12
4. Step 4: Simplify right side
   152,982x = 23,805,242,622.72
5. Step 5: Solve for x
   x = 23,805,242,622.72/152,982
6. Step 6: Final answer
   x = 155,608.13