Finding the Fourth Proportional to 56,918,159.76, 78,547,085.88 and 30,812,676.72

Step by Step Solution

1. Step 1: Write the proportion equation
   56,918,159.76 : 78,547,085.88 = 30,812,676.72 : x
2. Step 2: Convert to fraction form
   56,918,159.76/78,547,085.88 = 30,812,676.72/x
3. Step 3: Cross multiply
   56,918,159.76x = 78,547,085.88 × 30,812,676.72
4. Step 4: Simplify right side
   56,918,159.76x = 2,420,245,964,518,516.50
5. Step 5: Solve for x
   x = 2,420,245,964,518,516.50/56,918,159.76
6. Step 6: Final answer
   x = 42,521,507.63