Finding the Fourth Proportional to 377,532,837.50, 521,011,553.00 and 210,269,173.10

Step by Step Solution

1. Step 1: Write the proportion equation
   377,532,837.50 : 521,011,553.00 = 210,269,173.10 : x
2. Step 2: Convert to fraction form
   377,532,837.50/521,011,553.00 = 210,269,173.10/x
3. Step 3: Cross multiply
   377,532,837.50x = 521,011,553.00 × 210,269,173.10
4. Step 4: Simplify right side
   377,532,837.50x = 109,552,668,421,200,416
5. Step 5: Solve for x
   x = 109,552,668,421,200,416/377,532,837.50
6. Step 6: Final answer
   x = 290,180,502.31