Finding the Fourth Proportional to 152,038.71, 209,813.67 and 84,970.71

Step by Step Solution

1. Step 1: Write the proportion equation
   152,038.71 : 209,813.67 = 84,970.71 : x
2. Step 2: Convert to fraction form
   152,038.71/209,813.67 = 84,970.71/x
3. Step 3: Cross multiply
   152,038.71x = 209,813.67 × 84,970.71
4. Step 4: Simplify right side
   152,038.71x = 17,828,016,507.61
5. Step 5: Solve for x
   x = 17,828,016,507.61/152,038.71
6. Step 6: Final answer
   x = 117,259.72