Finding the Fourth Proportional to 72,090,487.84, 99,482,822.32 and 42,320,657.92

Step by Step Solution

1. Step 1: Write the proportion equation
   72,090,487.84 : 99,482,822.32 = 42,320,657.92 : x
2. Step 2: Convert to fraction form
   72,090,487.84/99,482,822.32 = 42,320,657.92/x
3. Step 3: Cross multiply
   72,090,487.84x = 99,482,822.32 × 42,320,657.92
4. Step 4: Simplify right side
   72,090,487.84x = 4,210,178,492,320,860.50
5. Step 5: Solve for x
   x = 4,210,178,492,320,860.50/72,090,487.84
6. Step 6: Final answer
   x = 58,401,303.95