Finding the Fourth Proportional to 87,999,196.10, 121,445,028.61 and 58,178,032.47

Step by Step Solution

1. Step 1: Write the proportion equation
   87,999,196.10 : 121,445,028.61 = 58,178,032.47 : x
2. Step 2: Convert to fraction form
   87,999,196.10/121,445,028.61 = 58,178,032.47/x
3. Step 3: Cross multiply
   87,999,196.10x = 121,445,028.61 × 58,178,032.47
4. Step 4: Simplify right side
   87,999,196.10x = 7,065,432,817,988,839
5. Step 5: Solve for x
   x = 7,065,432,817,988,839/87,999,196.10
6. Step 6: Final answer
   x = 80,289,742.76