Finding the Fourth Proportional to 216,799,997.50, 299,184,283.72 and 117,680,680.54

Step by Step Solution

1. Step 1: Write the proportion equation
   216,799,997.50 : 299,184,283.72 = 117,680,680.54 : x
2. Step 2: Convert to fraction form
   216,799,997.50/299,184,283.72 = 117,680,680.54/x
3. Step 3: Cross multiply
   216,799,997.50x = 299,184,283.72 × 117,680,680.54
4. Step 4: Simplify right side
   216,799,997.50x = 35,208,210,113,251,916
5. Step 5: Solve for x
   x = 35,208,210,113,251,916/216,799,997.50
6. Step 6: Final answer
   x = 162,399,495.02