Finding the Fourth Proportional to 152,643.10, 210,660.42 and 84,681.98

Step by Step Solution

1. Step 1: Write the proportion equation
   152,643.10 : 210,660.42 = 84,681.98 : x
2. Step 2: Convert to fraction form
   152,643.10/210,660.42 = 84,681.98/x
3. Step 3: Cross multiply
   152,643.10x = 210,660.42 × 84,681.98
4. Step 4: Simplify right side
   152,643.10x = 17,839,141,473.23
5. Step 5: Solve for x
   x = 17,839,141,473.23/152,643.10
6. Step 6: Final answer
   x = 116,868.31