Finding the Fourth Proportional to 152,471.34, 210,407.30 and 84,487.72

Step by Step Solution

1. Step 1: Write the proportion equation
   152,471.34 : 210,407.30 = 84,487.72 : x
2. Step 2: Convert to fraction form
   152,471.34/210,407.30 = 84,487.72/x
3. Step 3: Cross multiply
   152,471.34x = 210,407.30 × 84,487.72
4. Step 4: Simplify right side
   152,471.34x = 17,776,833,048.36
5. Step 5: Solve for x
   x = 17,776,833,048.36/152,471.34
6. Step 6: Final answer
   x = 116,591.31