Finding the Fourth Proportional to 111,019.06, 153,019.70 and 84,152.98

Step by Step Solution

1. Step 1: Write the proportion equation
   111,019.06 : 153,019.70 = 84,152.98 : x
2. Step 2: Convert to fraction form
   111,019.06/153,019.70 = 84,152.98/x
3. Step 3: Cross multiply
   111,019.06x = 153,019.70 × 84,152.98
4. Step 4: Simplify right side
   111,019.06x = 12,877,063,753.71
5. Step 5: Solve for x
   x = 12,877,063,753.71/111,019.06
6. Step 6: Final answer
   x = 115,989.67