Finding the Fourth Proportional to 153,504, 211,835.52 and 89,838.72

Step by Step Solution

1. Step 1: Write the proportion equation
   153,504 : 211,835.52 = 89,838.72 : x
2. Step 2: Convert to fraction form
   153,504/211,835.52 = 89,838.72/x
3. Step 3: Cross multiply
   153,504x = 211,835.52 × 89,838.72
4. Step 4: Simplify right side
   153,504x = 19,031,031,967.33
5. Step 5: Solve for x
   x = 19,031,031,967.33/153,504
6. Step 6: Final answer
   x = 123,977.43