Finding the Fourth Proportional to 172,488,667.82, 258,320,531.36 and 99,484,118.96

Step by Step Solution

1. Step 1: Write the proportion equation
   172,488,667.82 : 258,320,531.36 = 99,484,118.96 : x
2. Step 2: Convert to fraction form
   172,488,667.82/258,320,531.36 = 99,484,118.96/x
3. Step 3: Cross multiply
   172,488,667.82x = 258,320,531.36 × 99,484,118.96
4. Step 4: Simplify right side
   172,488,667.82x = 25,698,790,471,628,652
5. Step 5: Solve for x
   x = 25,698,790,471,628,652/172,488,667.82
6. Step 6: Final answer
   x = 148,988,283.09