Finding the Fourth Proportional to 153,658.50, 212,048.73 and 83,002.50

Step by Step Solution

1. Step 1: Write the proportion equation
   153,658.50 : 212,048.73 = 83,002.50 : x
2. Step 2: Convert to fraction form
   153,658.50/212,048.73 = 83,002.50/x
3. Step 3: Cross multiply
   153,658.50x = 212,048.73 × 83,002.50
4. Step 4: Simplify right side
   153,658.50x = 17,600,574,711.83
5. Step 5: Solve for x
   x = 17,600,574,711.83/153,658.50
6. Step 6: Final answer
   x = 114,543.45