Finding the Fourth Proportional to 180,219, 248,681.06 and 99,641.72

Step by Step Solution

1. Step 1: Write the proportion equation
   180,219 : 248,681.06 = 99,641.72 : x
2. Step 2: Convert to fraction form
   180,219/248,681.06 = 99,641.72/x
3. Step 3: Cross multiply
   180,219x = 248,681.06 × 99,641.72
4. Step 4: Simplify right side
   180,219x = 24,779,008,549.82
5. Step 5: Solve for x
   x = 24,779,008,549.82/180,219
6. Step 6: Final answer
   x = 137,493.87