Finding the Fourth Proportional to 153,510, 211,843.80 and 89,844.72

Step by Step Solution

1. Step 1: Write the proportion equation
   153,510 : 211,843.80 = 89,844.72 : x
2. Step 2: Convert to fraction form
   153,510/211,843.80 = 89,844.72/x
3. Step 3: Cross multiply
   153,510x = 211,843.80 × 89,844.72
4. Step 4: Simplify right side
   153,510x = 19,033,046,894.74
5. Step 5: Solve for x
   x = 19,033,046,894.74/153,510
6. Step 6: Final answer
   x = 123,985.71