Finding the Fourth Proportional to 212,699.88, 319,100.72 and 60,899.07

Step by Step Solution

1. Step 1: Write the proportion equation
   212,699.88 : 319,100.72 = 60,899.07 : x
2. Step 2: Convert to fraction form
   212,699.88/319,100.72 = 60,899.07/x
3. Step 3: Cross multiply
   212,699.88x = 319,100.72 × 60,899.07
4. Step 4: Simplify right side
   212,699.88x = 19,432,937,084.33
5. Step 5: Solve for x
   x = 19,432,937,084.33/212,699.88
6. Step 6: Final answer
   x = 91,363.18