Finding the Fourth Proportional to 152,784.63, 210,842.73 and 89,110.13

Step by Step Solution

1. Step 1: Write the proportion equation
   152,784.63 : 210,842.73 = 89,110.13 : x
2. Step 2: Convert to fraction form
   152,784.63/210,842.73 = 89,110.13/x
3. Step 3: Cross multiply
   152,784.63x = 210,842.73 × 89,110.13
4. Step 4: Simplify right side
   152,784.63x = 18,788,222,025.64
5. Step 5: Solve for x
   x = 18,788,222,025.64/152,784.63
6. Step 6: Final answer
   x = 122,971.94