Finding the Fourth Proportional to 152,732,733.69, 210,815,586.69 and 99,817,401.48

Step by Step Solution

1. Step 1: Write the proportion equation
   152,732,733.69 : 210,815,586.69 = 99,817,401.48 : x
2. Step 2: Convert to fraction form
   152,732,733.69/210,815,586.69 = 99,817,401.48/x
3. Step 3: Cross multiply
   152,732,733.69x = 210,815,586.69 × 99,817,401.48
4. Step 4: Simplify right side
   152,732,733.69x = 21,043,064,054,877,476
5. Step 5: Solve for x
   x = 21,043,064,054,877,476/152,732,733.69
6. Step 6: Final answer
   x = 137,777,040.63