Finding the Fourth Proportional to 131,602,396.79, 181,616,981.18 and 72,865,061.45

Step by Step Solution

1. Step 1: Write the proportion equation
   131,602,396.79 : 181,616,981.18 = 72,865,061.45 : x
2. Step 2: Convert to fraction form
   131,602,396.79/181,616,981.18 = 72,865,061.45/x
3. Step 3: Cross multiply
   131,602,396.79x = 181,616,981.18 × 72,865,061.45
4. Step 4: Simplify right side
   131,602,396.79x = 13,233,532,494,133,912
5. Step 5: Solve for x
   x = 13,233,532,494,133,912/131,602,396.79
6. Step 6: Final answer
   x = 100,556,926.14