Finding the Fourth Proportional to 152,881.56, 210,979.34 and 83,970.56

Step by Step Solution

1. Step 1: Write the proportion equation
   152,881.56 : 210,979.34 = 83,970.56 : x
2. Step 2: Convert to fraction form
   152,881.56/210,979.34 = 83,970.56/x
3. Step 3: Cross multiply
   152,881.56x = 210,979.34 × 83,970.56
4. Step 4: Simplify right side
   152,881.56x = 17,716,051,853.48
5. Step 5: Solve for x
   x = 17,716,051,853.48/152,881.56
6. Step 6: Final answer
   x = 115,880.89