Finding the Fourth Proportional to 191,989.10, 287,972.89 and 58,868.99

Step by Step Solution

1. Step 1: Write the proportion equation
   191,989.10 : 287,972.89 = 58,868.99 : x
2. Step 2: Convert to fraction form
   191,989.10/287,972.89 = 58,868.99/x
3. Step 3: Cross multiply
   191,989.10x = 287,972.89 × 58,868.99
4. Step 4: Simplify right side
   191,989.10x = 16,952,674,294.39
5. Step 5: Solve for x
   x = 16,952,674,294.39/191,989.10
6. Step 6: Final answer
   x = 88,300.19