Finding the Fourth Proportional to 152,798.61, 210,875.46 and 89,156.91

Step by Step Solution

1. Step 1: Write the proportion equation
   152,798.61 : 210,875.46 = 89,156.91 : x
2. Step 2: Convert to fraction form
   152,798.61/210,875.46 = 89,156.91/x
3. Step 3: Cross multiply
   152,798.61x = 210,875.46 × 89,156.91
4. Step 4: Simplify right side
   152,798.61x = 18,801,004,408.43
5. Step 5: Solve for x
   x = 18,801,004,408.43/152,798.61
6. Step 6: Final answer
   x = 123,044.34