Finding the Fourth Proportional to 152,658.47, 210,669.46 and 84,670.72

Step by Step Solution

1. Step 1: Write the proportion equation
   152,658.47 : 210,669.46 = 84,670.72 : x
2. Step 2: Convert to fraction form
   152,658.47/210,669.46 = 84,670.72/x
3. Step 3: Cross multiply
   152,658.47x = 210,669.46 × 84,670.72
4. Step 4: Simplify right side
   152,658.47x = 17,837,534,121.86
5. Step 5: Solve for x
   x = 17,837,534,121.86/152,658.47
6. Step 6: Final answer
   x = 116,846.01