Finding the Fourth Proportional to 152,031.58, 209,809.50 and 100,956.25

Step by Step Solution

1. Step 1: Write the proportion equation
   152,031.58 : 209,809.50 = 100,956.25 : x
2. Step 2: Convert to fraction form
   152,031.58/209,809.50 = 100,956.25/x
3. Step 3: Cross multiply
   152,031.58x = 209,809.50 × 100,956.25
4. Step 4: Simplify right side
   152,031.58x = 21,181,580,337.81
5. Step 5: Solve for x
   x = 21,181,580,337.81/152,031.58
6. Step 6: Final answer
   x = 139,323.55